LM185-12 National Semiconductor, LM185-12 Datasheet - Page 3

• Manufacturer Part Number: LM185-12
• Description: Micropower Voltage Reference Diode
• Manufacturer: National Semiconductor

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DataSheet
Reverse Breakdown
Voltage
Minimum Operating
Current
Reverse Breakdown
Voltage Change
with Current
Reverse Dynamic
Impedance
Wideband Noise
(rms)
Long Term Stability
Average Temperature
Coefficient (Note 7)
Electrical Characteristics
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended 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
Note 4: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at T
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 2)
Reverse Current
Forward Current
4
Operating Temperature Range (Note 3)
LM185 150˚C
LM285 125˚C
LM385 100˚C
JA
JC
LM185-1.2
LM285-1.2
LM385-1.2
U
Parameter
(junction to ambient)
.com
(junction to case)
Thermal Resistance
T
10 µA
LM385M3-1.2
10 µA
1 mA
I
I
10 Hz
I
T
I
X Suffix
Y Suffix
All Others
R
R
R
R
A
A
= 100 µA, f = 20 Hz
= 100 µA,
= 100 µA, T = 1000 Hr,
= 100 µA
= 25˚C,
= 25˚C
I
I
I
R
f
R
R
Conditions
±
10 kHz
20 mA
0.1˚C
20 mA
1 mA
j
max is:
(Note 4)
−55˚C to +125˚C
170˚C/W (0.125" leads)
−40˚C to +85˚C
180˚C/W (0.4" leads)
(Note 1)
0˚C to 70˚C
TO-92
1.235
Typ
30 mA
10 mA
N/A
60
20
8
1
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Tested
(Notes
1.223
1.247
Limit
5, 8)
10
10
30
50
LM185BX-1.2
LM185BY-1.2
LM285BX-1.2
LM285BY-1.2
1
3
LM185-1.2
LM285-1.2
Storage Temperature
Soldering Information
SO and SOT Pkg.
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
TO-92 package: 10 sec.
TO-46 package:10 sec.
Vapor phase (60 sec.)
Infrared (15 sec.)
(Note 6)
Design
Limit
150
1.5
20
20
440˚C/W
80˚C/W
TO-46
(Note 5)
Tested
1.223
1.247
Limit
15
20
30
50
LM385BX-1.2
LM385BY-1.2
1
LM385B-1.2
A
= T
165˚C/W
J
(Note 6)
Design
SO-8
= 25˚C.
Limit
N/A
150
1.5
20
25
(Note 5)
Tested
1.205
1.260
Limit
15
10
20
1
283˚C/W
SOT23
LM385-1.2
N/A
−55˚C to +150˚C
(Note 6)
Design
Limit
150
1.5
20
15
25
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260˚C
300˚C
215˚C
220˚C
V(Max)
ppm/˚C
ppm/˚C
ppm/˚C
(Limit)
V(Min)
Units
(Max)
(Max)
(Max)
(Max)
ppm
mV
mV
µA
µV
DataShee