If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

(Note 3)

Reverse Breakdown Current

30 mA

Forward Current

2 mA

Operating Temperature Range

LM129

−55˚C to +125˚C

LM329

0˚C to +70˚C

Storage Temperature Range

−55˚C to +150˚C

Soldering Information

TO-92 package: 10 sec.

260˚C

TO-46 package: 10 sec.

300˚C

LM129A, B, C

LM329A, B, C, D

Parameter

Conditions

Units

Min

Typ

Max

Min

Typ

Max

Reverse Breakdown Voltage

T

0.6 mA

≤ I

6.7

6.9

7.2

6.6

6.9

7.25

V

Reverse Breakdown Change

T

with Current (Note 4)

0.6 mA

≤ I

9

14

9

20

mV

Reverse Dynamic Impedance

T

0.6

1

0.8

2

Ω

(Note 4)

RMS Noise

T

10 Hz

≤ F ≤ 10 kHz

7

20

7

100

µV

Long Term Stability

T

(1000 hours)

I

20

20

ppm

Temperature Coefficient

I

LM129A, LM329A

6

10

6

10

ppm/˚C

LM129B, LM329B

15

20

15

20

ppm/˚C

LM129C, LM329C

30

50

30

50

ppm/˚C

LM329D

50

100

ppm/˚C

Change In Reverse Breakdown

1 mA

≤ I

1

1

ppm/˚C

Temperature Coefficient

Reverse Breakdown Change

1 mA

≤ I

12

12

mV

with Current

Reverse Dynamic Impedance

1 mA

≤ I

0.8

1

Ω

Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits.

Note 2: These specifications apply for −55˚C

temperature for an LM129 is 150˚C and LM329 is 100˚C. For operating at elevated temperature, devices in TO-46 package must be derated based on a thermal re-

sistance of 440˚C/W junction to ambient or 80˚C/W junction to case. For the TO-92 package, the derating is based on 180˚C/W junction to ambient with 0.4" leads

from a PC board and 160˚C/W junction to ambient with 0.125" lead length to a PC board.

Note 3: Refer to RETS129H for LM129 family military specifications.

Note 4: These changes are tested on a pulsed basis with a low duty-cycle. For changes versus temperature, compute in terms of tempco.

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