16
Screened, high-rel surface mount NTC thermistors
are provided in the EIA 0805 package. Resistance
values are specified at 25ºC with resistances at other
temperatures calculated using the appropriate resist-
ance vs. temperature tables.
Military Grade Chip Thermistors
NTC Military Grade Thermistors
The data provided on this page outlines the DSCC
(Defense Supply Center, Columbus) drawing MIL-PRF-
32192. The complete specifications can be obtained by
contacting DSCC (Defense Supply Center, Columbus). Please
contact Quality Thermistor Inc., for devices provided to the
MIL-PRF-32192 (1206 package) specification.
Engineering Information
Thermal Time Constant*: 8 seconds maximum.
Dissipation Constant*: 2mW/°C min.
Power Rating: The thermistor shall be capable of
dissipating a maximum power of
.125 watt at 25°C. Thermistors
shall be derated in accordance
with Table 1.
Resistance At 25°C: Zero power resistance values at
25°C (See Table 2).
*Thermal Time and Dissipation Constant may vary depending on mounting.
Dimensions MIL-PRF-32192/4 NTC STYLE
L = .078" +/– .008"
W = .049" +/– .008"
T = .055" Max
BW = .020" +/– .005"
TABLE 2 25°C to 125°C Ratio
Ordering Information
M32192 A 4 B 100 2 J M
100
80
60
40
20
0
-.55 -.20 0 20 40 80 120 140 160
25°C
125°C
TABLE 1 Derating Curve for High Ambient Temperatures
Ambient Temperature (°C)
Percent of Maximum Power
TABLE 3 Termination Materials
TYPE MATERIAL CODE
Solderable Base metalization barrier metal, solder coated B
Epoxy Bondable Gold G
Epoxy Bondable Platinum Gold U
Epoxy Bondable Platinum Gold T
Epoxy Bondable Palladium Silver or Platinum Silver C
Epoxy Bondable Palladium Silver or Platinum Silver D
Wire Bondable Silver S
Wire Bondable Gold W
Military Grade
NTC THERMISTORS
RATIO D (7.1) RATIO H (13.0) RATIO L (16.1) RATIO A (19.8) RATIO B (29.4) RATIO M (23.3) RATIO N (38.5) RATIO C (48.7) RATIO R (62.5)
47 Ohm 470 Ohm 2K Ohm 5K Ohm 47K Ohm 100K Ohm 240K Ohm 750K Ohm 4.7M Ohm
to to to to to to to to to
250 Ohm 1.5K Ohm 4.7K Ohm 20K Ohm 100K Ohm 200K Ohm 510K Ohm 2M Ohm 10M Ohm
Level Designator
Tolerance Code
# of Zeros
1st 3 Resistance Digits
Termination Finish
MIL-PRF-32192 Slash
Sheet Designation
Resistance/Temperature
Ratio
DSCC Drawing Number
