The Resistor,thermal, cataloged under National Stock Number 5905-00-490-5086, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Micro Uspd Inc. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-490-5086 |
| Primary Part Number | TM1-8-121J |
| Item Name | Resistor,thermal |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Micro Uspd Inc |
| Status | ACTIVE |
| Temp Points for Resistance Readings at Zero Power | 75.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 125.0 CELSIUS SIXTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 150.0 CELSIUS SEVENTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 50.0 CELSIUS THIRD RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | -75.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT-75.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 0.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT0.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 100.0 CELSIUS FIFTH RESISTANCE-TEMPERATURE POINT100.0 CELSIUS FIFTH RESISTANCE-TEMPERATURE POINT DEGC |
| Inclosure Type | ENCAPSULATED |
| Terminal Diameter | 0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN |
| Resistance Tolerance at a Specified Temp in Percent | -5.0 TO 5.0 ALL RESISTANCE-TEMPERATURE POINTS-5.0 TO 5.0 ALL RESISTANCE-TEMPERATURE POINTS |
| Terminal Length | 1.375 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Zero Power Resistance at Specified Temp | 100.8 OHMS SECOND RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 140.4 OHMS THIRD RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 168.0 OHMS FOURTH RESISTANCE-TEMPERATURE POINT168.0 OHMS FOURTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 193.2 OHMS FIFTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 222.0 OHMS SIXTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 252.0 OHMS SEVENTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 57.6 OHMS FIRST RESISTANCE-TEMPERATURE POINT57.6 OHMS FIRST RESISTANCE-TEMPERATURE POINT |
| Body Outside Diameter | 0.130 INCHES MINIMUM AND 0.130 INCHES MINIMUM AND 0.155 INCHES MAXIMUM0.155 INCHES MAXIMUM IN |
| Style Designator | ROD |
| Power Dissipation Constant in Milliwatts Per Deg Celsius | 5.05.0 |
| Zero Power Resistance | 120.000 OHMS120.000 OHMS |
| Thermal Time Constant in Seconds | 40.040.0 |
| Ambient Temp at Full Rated Power | 25.0 CELSIUS DEGC |
| Zero Power Resistance Tolerance in Percent at Reference Temp | -5.0 TO 5.0 |
| Maximum Operating Temp | 150.0 CELSIUS150.0 CELSIUS DEGC |
| Body Length | 0.402 INCHES MINIMUM AND 0.421 INCHES MAXIMUM IN |
| Zero Power Temp Coefficient of Resistance in Percent Per Deg Celsius | 0.70 |
| Reliability Indicator | NOT ESTABLISHEDNOT ESTABLISHED |
| Test Data Document | 94990-06+14404A DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| TM1-8-121J PRIMARY | Micro Uspd Inc (USA) |
| Reference | Meaning |
|---|---|
| KFW310B | C/1 Advisory reference — outside the item-of-supply concept Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution |
| 730152-24 | 5/1 Secondary reference U.S. Government activity |
| TM1-8-121J | 5/9 Secondary reference Texas Instruments Incorporated |
NSN 5905-00-490-5086 is a Resistor,thermal, manufactured by Micro Uspd Inc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-490-5086 has 1 manufacturer part number on file: TM1-8-121J (Micro Uspd Inc).
Key specifications for TM1-8-121J: Temp Points for Resistance Readings at Zero Power: 75.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 125.0 CELSIUS SIXTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 150.0 CELSIUS SEVENTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 50.0 CELSIUS THIRD RESISTANCE-TEMPERATURE POINT DEGC. 30 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.