Windchill Risk and Reliability Desktop Help > Windchill Prediction > Part Parameters Required for Predictions > MIL-HDBK-217 Part Parameters > MIL-HDBK-217 Temperature Calculations > Thermal Resistance Values for Semiconductors
Thermal Resistance Values for Semiconductors
MIL-HDBK-217 FN1 supplies thermal resistance values for semiconductors. The following table provides these values for your convenience. If the package type is unknown, use a thermal resistance value of 70 degrees C.
Package Type
Therm. Res.
Package Type
Therm. Res.
TO-1
70
TO-205AD
70
TO-3
10
TO-205AF
70
TO-5
70
TO-220
5
TO-8
70
DO-4
5
TO-9
70
DO-5
5
TO-12
70
DO-7
10
TO-18
70
DO-8
5
TO-28
5
DO-9
5
TO-33
70
DO-13
10
TO-39
70
DO-14
5
TO-41
10
DO-29
10
TO-44
70
DO-35
10
TO-46
70
DO-41
10
TO-52
70
DO-45
5
TO-53
5
DO-204MB
70
TO-57
5
DO-205AB
5
TO-59
5
PA-42A, B
70
TO-60
5
PD-36C
70
TO-61
5
PD-50
70
TO-63
5
PD-77
70
TO-66
10
PD-180
70
TO-71
70
PD-319
70
TO-72
70
PD-262
70
TO-83
5
PD-975
70
TO-89
22
PD-280
70
TO-92
70
PD-216
70
TO-94
5
PT-2G
70
T0-99
70
PT-6B
70
TO-126
5
PH-13
70
TO-127
5
PH-16
70
TO-204
10
PY-56
70
TO-204AA
10
PY-58
70
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PY-373
70
MIL-HDBK-217 Temperature Calculations