Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Reverse Current
Forward Current
Storage Temperature
15 mA
10 mA
−60˚C to +150˚C
Operating Temperature Range (Note 2)
LM136
−55˚C to +150˚C
LM236
−25˚C to +85˚C
LM336
0˚C to +70˚C
Soldering Information
TO-92 Package (10 sec.)
260˚C
TO-46 Package (10 sec.)
300˚C
SO Package
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” (Appendix D) for other methods of
soldering surface mount devices.
Electrical Characteristics
(Note 3)
LM136A-2.5/LM236A-2.5
Parameter
Reverse Breakdown Voltage
Conditions
T
A
= 25˚C, I
R
= 1 mA
LM136, LM236, LM336
Reverse Breakdown Change
With Current
Reverse Dynamic Impedance
Temperature Stability
(Note 4)
LM136A, LM236A, LM336B
T
A
= 25˚C,
400 µA≤I
R
≤10
mA
T
A
= 25˚C, I
R
= 1 mA, f = 100 Hz
V
R
Adjusted to 2.490V
I
R
= 1 mA,
Figure 2
0˚C≤T
A
≤70˚C
(LM336)
−25˚C≤T
A
≤+85˚C
(LM236H, LM236Z)
−25˚C
≤
T
A
≤
+85˚C (LM236M)
−55˚C≤T
A
≤+125˚C
(LM136)
Reverse Breakdown Change
With Current
Reverse Dynamic Impedance
Long Term Stability
I
R
= 1 mA
T
A
= 25˚C
±
0.1˚C, I
R
= 1 mA,
t = 1000 hrs
0.4
20
1
0.4
20
1.4
Ω
ppm
400 µA≤I
R
≤10
mA
7.5
12
3
18
18
10
3
12
mV
mV
mV
3.5
9
1.8
6
mV
mV
2.440
2.465
2.490
2.490
2.6
0.2
2.540
2.515
6
0.6
2.390
2.440
2.490
2.490
2.6
0.2
2.590
2.540
10
1
V
V
mV
Ω
LM136-2.5/LM236-2.5
Min
Typ
Max
Min
LM336B-2.5
LM336-2.5
Typ
Max
Units
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
beyond its specified operating conditions.
Note 2:
For elevated temperature operation, T
j
max is:
LM136
LM236
LM336
150˚C
125˚C
100˚C
Thermal Resistance
θ
ja
(Junction to Ambient)
θ
ja
(Junction to Case)
TO-92
180˚C/W (0.4" leads)
170˚C/W (0.125" lead)
n/a
TO-46
440˚C/W
80˚C/W
SO-8
165˚C/W
n/a
Note 3:
Unless otherwise specified, the LM136-2.5 is specified from −55˚C
≤
T
A
≤
+125˚C, the LM236-2.5 from −25˚C
≤
T
A
≤
+85˚C and the LM336-2.5 from 0˚C
≤
T
A
≤
+70˚C.
Note 4:
Temperature stability for the LM336 and LM236 family is guaranteed by design. Design limits are guaranteed (but not 100% production tested) over the in-
dicated temperature and supply voltage ranges. These limits are not used to calculate outgoing quality levels. Stability is defined as the maximum change in V
ref
from
25˚C to T
A
(min) or T
A
(max).
3
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
