The Resistor,fixed,film, cataloged under National Stock Number 5905-00-252-4243, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Nautel Limited. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5905-00-252-4243 |
| Primary Part Number | RD21 |
| Item Name | Resistor,fixed,film |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Nautel Limited |
| Status | ACTIVE |
| Resistance Tolerance in Percent | -2.000 TO 2.000 |
| Temp Coefficient of Resistance in Ppm Per Deg Celsius | -200.0 TO 200.0 |
| Body Diameter | 0.138 INCHES NOMINAL IN |
| Electrical Resistance | 150.000 KILOHMS |
| Inclosure Type | ENCAPSULATED |
| Terminal Type | WIRE LEAD |
| Temp Range of Temp Coefficient in Deg Celsius | -55.0 TO 150.0 |
| Style Designator | AXIAL TERMINAL EACH END |
| Reliability Failure Rate Level in Percent | 0.010 |
| Power Dissipation Rating in Watts | 0.500 FREE AIR |
| Ambient Temp at Full Rated Power | 70.0 CELSIUS DEGC |
| Body Length | 0.375 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius at Zero Percent Rated Power | 150.0 |
| Reliability Indicator | ESTABLISHED |
| Test Data Document | 81349-MILR39017 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| 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 |
|---|---|
| RD21 | Nautel Limited (CAN) |
| Reference | Meaning |
|---|---|
| RLR20C154GR | 2/2 Government specification standardization U.S. Government activity |
| MILR39017-2 | 4/1 Identification reference U.S. Government activity |
| F20-154G | 5/9 Secondary reference Welwyn International Inc |
NSN 5905-00-252-4243 is a Resistor,fixed,film, manufactured by Nautel Limited, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-252-4243 has 1 manufacturer part number on file: RD21 (Nautel Limited).
2 possible matches (shared part number, not a government interchangeability claim): 5905-01-113-2658, 5905-01-187-6443. Verify interchangeability with system specifications before substitution.
Key specifications for RD21: Resistance Tolerance in Percent: -2.000 TO 2.000; Temp Coefficient of Resistance in Ppm Per Deg Celsius: -200.0 TO 200.0; Body Diameter: 0.138 INCHES NOMINAL IN; Electrical Resistance: 150.000 KILOHMS. 15 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.