6 Specifications
6.1 Absolute Maximum Ratings
over freeair temperature range (unless otherwise noted)^{(1)}

MIN 
MAX 
UNIT 
I_{Z} 
Continuous cathode current 
–10 
25 
mA 
T_{J} 
Operating virtual junction temperature 

150 
°C 
T_{stg} 
Storage temperature range 
–65 
150 
°C 
(1) Stresses beyond those listed under
Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under
Recommended Operating Conditionsis not implied. Exposure to absolutemaximumrated conditions for extended periods may affect device reliability.
6.2 ESD Ratings

VALUE 
UNIT 
V_{(ESD)} 
Electrostatic discharge 
Human body model (HBM), per ANSI/ESDA/JEDEC JS001, all pins^{(1)} 
±2000 
V 
Charged device model (CDM), per JEDEC specification JESD22C101, all pins^{(2)} 
±1000 
(1) JEDEC document JEP155 states that 500V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions

MIN 
MAX 
UNIT 
I_{Z} 
Cathode current 
^{(1)} 
15 
mA 
T_{A} 
Freeair temperature 
LM4040xxxI 
–40 
85 
°C 
LM4040xxxQ 
–40 
125 
(1) See parametric tables
6.4 Thermal Information
THERMAL METRIC^{(1)} 
LM4040 
UNIT 
DBZ 
DCK 
3 PINS 
5 PINS 
R_{θJA} 
Junctiontoambient thermal resistance 
206 
252 
°C/W 
6.5 LM4040A20I, LM4040B20I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040A20I 
LM4040B20I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

2.048 


2.048 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–2 

2 
–4.1 

4.1 
mV 
Full range 
–15 

15 
–17 

17 
I_{Z,min} 
Minimum cathode current 

25°C 

45 
75 

45 
75 
μA 
Full range 


80 


80 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±100 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.3 
0.8 

0.3 
0.8 
mV 
Full range 


1 


1 
1 mA < I_{Z} < 15 mA 
25°C 

2.5 
6 

2.5 
6 
Full range 


8 


8 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.3 
0.8 

0.3 
0.8 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.6 LM4040C20I, LM4040D20I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C20I 
LM4040D20I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

2.048 


2.048 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–10 

10 
–20 

20 
mV 
Full range 
–23 

23 
–40 

40 
I_{Z,min} 
Minimum cathode current 

25°C 

45 
75 

45 
75 
μA 
Full range 


80 


80 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.3 
0.8 

0.3 
1 
mV 
Full range 


1 


1.2 
1 mA < I_{Z} < 15 mA 
25°C 

2.5 
6 

2.5 
8 
Full range 


8 


10 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.3 
0.9 

0.3 
1.1 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.7 LM4040C20Q, LM4040D20Q Electrical Characteristics
at extended temperature range, fullrange T_{A} = –40°C to 125°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C20Q 
LM4040D20Q 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

2.048 


2.048 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–10 

10 
–20 

20 
mV 
Full range 
–30 

30 
–50 

50 
I_{Z,min} 
Minimum cathode current 

25°C 

45 
75 

45 
75 
μA 
Full range 


80 


80 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.3 
0.8 

0.3 
1 
mV 
Full range 


1 


1.2 
1 mA < I_{Z} < 15 mA 
25°C 

2.5 
6 

2.5 
8 
Full range 


8 


10 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.3 
0.9 

0.3 
1.1 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.8 LM4040A25I, LM4040B25I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040A25I 
LM4040B25I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

2.5 


2.5 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–2.5 

2.5 
–5 

5 
mV 
Full range 
–19 

19 
–21 

21 
I_{Z,min} 
Minimum cathode current 

25°C 

45 
75 

45 
75 
μA 
Full range 


80 


80 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±100 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.3 
0.8 

0.3 
0.8 
mV 
Full range 


1 


1 
1 mA < I_{Z} < 15 mA 
25°C 

2.5 
6 

2.5 
6 
Full range 


8 


8 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.3 
0.8 

0.3 
0.8 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.9 LM4040C25I, LM4040D25I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C25I 
LM4040D25I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

2.5 


2.5 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–12 

12 
–25 

25 
mV 
Full range 
–29 

29 
–49 

49 
I_{Z,min} 
Minimum cathode current 

25°C 

45 
75 

45 
75 
μA 
Full range 


80 


80 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.3 
0.8 

0.3 
1 
mV 
Full range 


1 


1.2 
1 mA < I_{Z} < 15 mA 
25°C 

2.5 
6 

2.5 
8 
Full range 


8 


10 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.3 
0.9 

0.3 
1.1 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.10 LM4040C25Q, LM4040D25Q Electrical Characteristics
at extended temperature range, fullrange T_{A} = –40°C to 125°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C25Q 
LM4040D25Q 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

2.5 


2.5 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–12 

12 
–25 

25 
mV 
Full range 
–38 

38 
–63 

63 
I_{Z,min} 
Minimum cathode current 

25°C 

45 
75 

45 
75 
μA 
Full range 


80 


80 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.3 
0.8 

0.3 
1 
mV 
Full range 


1 


1.2 
1 mA < I_{Z} < 15 mA 
25°C 

2.5 
6 

2.5 
8 
Full range 


8 


10 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.3 
0.9 

0.3 
1.1 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.11 LM4040A30I, LM4040B30I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040A30I 
LM4040B30I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

3 


3 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–3 

3 
–6 

6 
mV 
Full range 
–22 

22 
–26 

26 
I_{Z,min} 
Minimum cathode current 

25°C 

47 
77 

47 
77 
μA 
Full range 


82 


82 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±100 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.6 
0.8 

0.6 
0.8 
mV 
Full range 


1.1 


1.1 
1 mA < I_{Z} < 15 mA 
25°C 

2.7 
6 

2.7 
6 
Full range 


9 


9 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.4 
0.9 

0.4 
0.9 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.12 LM4040C30I, LM4040D30I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C30I 
LM4040D30I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

3 


3 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–15 

15 
–30 

30 
mV 
Full range 
–34 

34 
–59 

59 
I_{Z,min} 
Minimum cathode current 

25°C 

45 
77 

45 
77 
μA 
Full range 


82 


82 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.4 
0.8 

1.4 
1 
mV 
Full range 


1.1 


1.3 
1 mA < I_{Z} < 15 mA 
25°C 

2.7 
6 

2.7 
8 
Full range 


9 


11 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.4 
0.9 

0.4 
1.2 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.13 LM4040C30Q, LM4040D30Q Electrical Characteristics
at extended temperature range, fullrange T_{A} = –40°C to 125°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C30Q 
LM4040D30Q 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

3 


3 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–15 

15 
–30 

30 
mV 
Full range 
–45 

45 
–75 

75 
I_{Z,min} 
Minimum cathode current 

25°C 

47 
77 

47 
77 
μA 
Full range 


82 


82 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±20 


±20 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±15 


±15 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±15 


±15 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.4 
0.8 

0.4 
1.1 
mV 
Full range 


1.1 


1.3 
1 mA < I_{Z} < 15 mA 
25°C 

2.7 
6 

2.7 
8 
Full range 


9 


11 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.4 
0.9 

0.4 
1.2 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

35 


35 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.14 LM4040A41I, LM4040B41I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040A41I 
LM4040B41I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

4.096 


4.096 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–4.1 

4.1 
–8.2 

8.2 
mV 
Full range 
–31 

31 
–35 

35 
I_{Z,min} 
Minimum cathode current 

25°C 

50 
83 

50 
83 
μA 
Full range 


88 


88 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±30 


±30 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±100 
I_{Z} = 100 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.5 
0.9 

0.5 
0.9 
mV 
Full range 


1.2 


1.2 
1 mA < I_{Z} < 15 mA 
25°C 

3 
7 

3 
7 
Full range 


10 


10 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.5 
1 

0.5 
1 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

80 


80 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.15 LM4040C41I, LM4040D41I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C41I 
LM4040D41I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

4.096 


4.096 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–20 

20 
–41 

41 
mV 
Full range 
–47 

47 
–81 

81 
I_{Z,min} 
Minimum cathode current 

25°C 

50 
83 

50 
83 
μA 
Full range 


88 


88 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±30 


±30 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.5 
0.9 

0.5 
1.2 
mV 
Full range 


1.2 


1.5 
1 mA < I_{Z} < 15 mA 
25°C 

3 
7 

3 
9 
Full range 


10 


13 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.5 
1 

0.5 
1.3 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

80 


80 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.16 LM4040A50I, LM4040B50I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040A50I 
LM4040B50I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

5 


5 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–5 

5 
–10 

10 
mV 
Full range 
–38 

38 
–43 

43 
I_{Z,min} 
Minimum cathode current 

25°C 

65 
89 

65 
89 
μA 
Full range 


95 


95 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±30 


±30 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±100 
I_{Z} = 100 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.5 
1 

0.5 
1 
mV 
Full range 


1.4 


1.4 
1 mA < I_{Z} < 15 mA 
25°C 

3.5 
8 

3.5 
8 
Full range 


12 


12 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.5 
1.1 

0.5 
1.1 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

80 


80 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.17 LM4040C50I, LM4040D50I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C50I 
LM4040D50I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

5 


5 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–25 

25 
–50 

50 
mV 
Full range 
–58 

58 
–99 

99 
I_{Z,min} 
Minimum cathode current 

25°C 

65 
89 

65 
89 
μA 
Full range 


95 


95 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±30 


±30 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.5 
1 

0.5 
1.3 
mV 
Full range 


1.4 


1.8 
1 mA < I_{Z} < 15 mA 
25°C 

3.5 
8 

3.5 
10 
Full range 


12 


15 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.5 
1.1 

0.5 
1.5 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

80 


80 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.18 LM4040C50Q, LM4040D50Q Electrical Characteristics
at extended temperature range, fullrange T_{A} = –40°C to 125°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C50Q 
LM4040D50Q 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 100 μA 
25°C 

5 


5 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 100 μA 
25°C 
–25 

25 
–50 

50 
mV 
Full range 
–75 

75 
–125 

125 
I_{Z,min} 
Minimum cathode current 

25°C 

65 
89 

65 
89 
μA 
Full range 


95 


95 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±30 


±30 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±150 
I_{Z} = 100 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.5 
1 

0.5 
1 
mV 
Full range 


1.4 


1.8 
1 mA < I_{Z} < 15 mA 
25°C 

3.5 
8 

3.5 
8 
Full range 


12 


12 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.5 
1.1 

0.5 
1.1 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 100 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

80 


80 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 100 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.19 LM4040A82I, LM4040B82I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040A82I 
LM4040B82I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 150 μA 
25°C 

8.192 


8.192 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 150 μA 
25°C 
–8.2 

8.2 
–16 

16 
mV 
Full range 
–61 

61 
–70 

70 
I_{Z,min} 
Minimum cathode current 

25°C 

67 
106 

67 
106 
μA 
Full range 


110 


110 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±40 


±40 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±100 
I_{Z} = 150 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.6 
1.3 

0.6 
1.6 
mV 
Full range 


2.5 


2.5 
1 mA < I_{Z} < 15 mA 
25°C 

7 
10 

7 
10 
Full range 


18 


18 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.6 
1.5 

0.6 
1.5 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 150 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

130 


130 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 150 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.20 LM4040C82I, LM4040D82I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C82I 
LM4040D82I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 150 μA 
25°C 

8.192 


8.192 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 150 μA 
25°C 
–41 

41 
–82 

82 
mV 
Full range 
–94 

94 
–162 

162 
I_{Z,min} 
Minimum cathode current 

25°C 

67 
106 

67 
111 
μA 
Full range 


110 


115 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±40 


±40 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±150 
I_{Z} = 150 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.6 
1.3 

0.6 
1.7 
mV 
Full range 


2.5 


3 
1 mA < I_{Z} < 15 mA 
25°C 

7 
10 

7 
15 
Full range 


18 


24 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.6 
1.5 

0.6 
1.9 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 150 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

130 


130 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 150 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.21 LM4040A10I, LM4040B10I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040A10I 
LM4040B10I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 150 μA 
25°C 

10 


10 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 150 μA 
25°C 
–10 

10 
–20 

20 
mV 
Full range 
–75 

75 
–85 

85 
I_{Z,min} 
Minimum cathode current 

25°C 

75 
120 

75 
120 
μA 
Full range 


125 


125 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±40 


±40 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±100 
I_{Z} = 150 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.8 
1.5 

0.8 
1.5 
mV 
Full range 


3.5 


3.5 
1 mA < I_{Z} < 15 mA 
25°C 

8 
14 

8 
14 
Full range 


24 


24 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.7 
1.7 

0.7 
1.7 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 150 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

180 


180 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 150 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.22 LM4040C10I, LM4040D10I Electrical Characteristics
at industrial temperature range, fullrange T_{A} = –40°C to 85°C (unless otherwise noted)
PARAMETER 
TEST CONDITIONS 
T_{A} 
LM4040C10I 
LM4040D10I 
UNIT 
MIN 
TYP 
MAX 
MIN 
TYP 
MAX 
V_{Z} 
Reverse breakdown voltage 
I_{Z} = 150 μA 
25°C 

10 


10 

V 
ΔV_{Z} 
Reverse breakdown voltage tolerance 
I_{Z} = 150 μA 
25°C 
–50 

50 
–100 

100 
mV 
Full range 
–115 

115 
–198 

198 
I_{Z,min} 
Minimum cathode current 

25°C 

75 
120 

75 
130 
μA 
Full range 


125 


135 
α_{VZ} 
Average temperature coefficient of reverse breakdown voltage ^{(2)} 
I_{Z} = 10 mA 
25°C 

±40 


±40 

ppm/°C 
I_{Z} = 1 mA 
25°C 

±20 


±20 

Full range 


±100 


±150 
I_{Z} = 150 μA 
25°C 

±20 


±20 


Reverse breakdown voltage change with cathode current change 
I_{Z,min} < I_{Z} < 1 mA 
25°C 

0.8 
1.5 

0.8 
2 
mV 
Full range 


3.5 


4 
1 mA < I_{Z} < 15 mA 
25°C 

8 
14 

8 
18 
Full range 


24 


29 
Z_{Z} 
Reverse dynamic impedance 
I_{Z} = 1 mA, f = 120 Hz, I_{AC} = 0.1 I_{Z} 
25°C 

0.7 
1.7 

0.7 
2.3 
Ω 
e_{N} 
Wideband noise 
I_{Z} = 150 μA, 10 Hz ≤ f ≤ 10 kHz 
25°C 

180 


180 

μV_{RMS} 

Longterm stability of reverse breakdown voltage 
t = 1000 h, T_{A} = 25°C ± 0.1°C, I_{Z} = 150 μA 


120 


120 

ppm 
V_{HYST} 
Thermal hysteresis^{(1)} 
ΔT_{A} = –40°C to 125°C 


0.08% 


0.08% 

— 
(1) Thermal hysteresis is defined as the difference in voltage measured at 25°C after cycling to temperature –40°C and the 25°C measurement after cycling to temperature 125°C.
(2) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔV_{R}/ΔT)(maxΔT)(V_{R})]. Where, ΔV_{R}/ΔT is the V_{R} temperature coefficient, maxΔT is the maximum difference in temperature from the reference point of 25°C to T_{ MIN} or T_{MAX}, and V_{R} is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
Agrade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
Bgrade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
Cgrade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
Dgrade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
Cgrade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
Dgrade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the Agrade 2.5V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.
6.23 Typical Characteristics
Figure 1. Temperature Drift for Different Average
Temperature Coefficients
Figure 3. Output Impedance vs Frequency
Figure 5. Noise Voltage vs Frequency
Figure 2. Output Impedance vs Frequency
Figure 4. Temperature Drift for Different Average
Temperature Coefficient