LM185-1.2/LM285-1.2/LM385-1.2
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Reverse Current
Forward Current
Operating Temperature Range (Note 3)
LM185-1.2
LM285-1.2
LM385-1.2
−55˚C to +125˚C
−40˚C to +85˚C
0˚C to 70˚C
30mA
10mA
Storage Temperature
Soldering Information
TO-92 package: 10 sec.
TO-46 package:10 sec.
SO and SOT Pkg.
Vapor phase (60 sec.)
Infrared (15 sec.)
−55˚C to +150˚C
260˚C
300˚C
215˚C
220˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Electrical Characteristics
LM185-1.2
LM185BX-1.2
LM185BY-1.2
LM285-1.2
Parameter
Conditions
Typ
LM285BX-1.2
LM285BY-1.2
Tested
Limit
(Notes
Reverse Breakdown
Voltage
Minimum Operating
Current
Reverse Breakdown
Voltage Change
with Current
Reverse Dynamic
Impedance
Wideband Noise
(rms)
Long Term Stability
I
R
= 100µA,
10Hz
≤
f
≤
10kHz
I
R
= 100µA, T = 1000
Hr,
T
A
= 25˚C
±
0.1˚C
Average
Temperature
Coefficient (Note 7)
I
R
= 100µA
X Suffix
Y Suffix
All Others
30
50
150
30
50
150
150
ppm/˚C
ppm/˚C
ppm/˚C
(Max)
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed.
Note 2:
Refer to RETS185H-1.2 for military specifications.
Note 3:
For elevated temperature operation, T
j
max is:
LM185 150˚C
LM285
LM385
125˚C
100˚C
LM385B-1.2
LM385BX-1.2
LM385BY-1.2
LM385-1.2
Units
(Limit)
Tested
Limit
1.223
1.247
Design
Limit
Tested
Limit
1.205
1.260
20
1.5
25
15
10
1
20
20
15
1.5
25
Design
Limit
V(Min)
V(Max)
µA
(Max)
mV
(Max)
mV
(Max)
Ω
µV
Design
Limit
T
A
= 25˚C,
10µA
≤
I
R
≤
20mA
1.235
8
1.223
1.247
10
1
10
20
1.5
20
15
1
20
LM385M3-1.2
10µA
≤
I
R
≤
1mA
1mA
≤
I
R
≤
20mA
I
R
= 100µA, f = 20Hz
1
60
20
ppm
3
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
