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
resistance vs. temperature tables.
Military Grade Chip Thermistors
NTC THERMISTORS
22
NTC Military Grade Thermistors
The data provided on this page outlines the DSCC
(Defense Supply Center, Columbus) drawing 93073. The
complete 93073 specifications can be obtained by
contacting DSCC. Please consult factory for devices provided
to the 93074 (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).
Tested IAW MIL-PRF-23648. See DESC drawing 93073
for further details.
*Thermal Time and Dissipation Constant may vary depending on mounting.
Dimensions 93073 NTC STYLE
L = .078" +/– .008"
W = .049" +/– .008"
T = .055" Max
BW = .020" +/– .005"
TABLE 2 Minimum and Maximum Resistance Values (at 25°C) For Each Available Curve
CURVE A (QTI CURVE X) CURVE T CURVE Y CURVE Z CURVE S CURVE P
470 Ohm 2K Ohm 10K Ohm 47K Ohm 100K Ohm 4.7 Meg Ohm
to to to to to to
1.5K Ohm 7.5K Ohm 20K Ohm 100K Ohm 200K Ohm 10 Meg Ohm
Ordering Information
Resistance Tolerance Code
Number of Zeros
1st 3 Resistance Digits
Curve
Drawing Number
93073-Z 500 2 J
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
Tolerance Code:
K = 10% with Tin/Lead Terminations
J = 5% with Tin/Lead Terminations
G = 2% with Tin/Lead Terminations
F = 1% with Tin/Lead Terminations
E = 10% with Gold Terminations
D = 5% with Gold Terminations
C = 2% with Gold Terminations
B = 1% with Gold Terminations
