The Resistor,thermal, cataloged under National Stock Number 5905-00-168-4589, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-168-4589 |
| Item Name | Resistor,thermal |
| FSC / FSG | 5905 / 59 — Resistor |
| Status | ACTIVE |
| Temp Points for Resistance Readings at Zero Power | 0.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 100.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 125.0 CELSIUS FIFTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | -75.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 150.0 CELSIUS SIXTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 5.0 CELSIUS THIRD RESISTANCE-TEMPERATURE POINT DEGC |
| Inclosure Type | ENCAPSULATED |
| Terminal Diameter | 0.025 INCHES NOMINAL IN |
| Terminal Length | 1.500 INCHES NOMINAL IN |
| Zero Power Resistance at Specified Temp | 1.0 KILOHMS SEVENTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 225.0 OHMS FIRST RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 420.0 OHMS SECOND RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 600.0 OHMS THIRD RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 715.0 OHMS FOURTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 830.0 OHMS FIFTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 955.0 OHMS SIXTH RESISTANCE-TEMPERATURE POINT |
| Body Outside Diameter | 0.200 INCHES NOMINAL IN |
| Style Designator | ROD |
| Zero Power Resistance | 500.000 OHMS |
| Thermal Time Constant in Seconds | 60.0 |
| Ambient Temp at Full Rated Power | 100.0 CELSIUS DEGC |
| Zero Power Resistance Tolerance in Percent at Reference Temp | -10.0 TO 10.0 |
| Maximum Operating Temp | 150.0 CELSIUS DEGC |
| Body Length | 0.585 INCHES NOMINAL IN |
| Zero Power Temp Coefficient of Resistance in Percent Per Deg Celsius | 0.70 |
| Reliability Indicator | NOT ESTABLISHED |
| Terminal Type and Quantity | 2 WIRE LEAD |
| Maximum Power Dissipation Rating | 250.00 MILLIWATTS |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| CAT-TM.25-500 | 5/1 Secondary reference Texas Instruments Incorporated |
| TM1-4-500 | 5/1 Secondary reference Texas Instruments Incorporated |
| TM1-4 500P0RM10PCT | 5/1 Secondary reference Texas Instruments Incorporated |
| TM 1/4 501K | 3/1 Design control — primary reference Micro Uspd Inc |
NSN 5905-00-168-4589 is a Resistor,thermal, classified under FSC 5905, Resistor. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4470-00-873-2546, 5905-00-984-6809. Verify interchangeability with system specifications before substitution.
Key specifications for 5905-00-168-4589: Temp Points for Resistance Readings at Zero Power: 0.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 100.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 125.0 CELSIUS FIFTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: -75.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC. 29 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.