The Resistor,chip,fixed,film, cataloged under National Stock Number 5905-01-672-2641, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Koa Speer Electronics Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5905-01-672-2641 |
| Primary Part Number | RK73B2BLTD221J |
| Item Name | Resistor,chip,fixed,film |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Koa Speer Electronics Inc |
| Status | ACTIVE |
| Resistance Tolerance in Percent | -5.0 TO 5.0 |
| Electrical Resistance | 220.0 OHMS |
| Terminal Type | WRAP AROUND |
| Inclosure Method | ENCASED |
| Body Width | 0.063 INCHES NOMINAL IN |
| Body Height | 0.024 INCHES NOMINAL IN |
| Style Designator | TERMINATION PAD EACH END |
| Power Dissipation Rating in Watts | 0.25 FREE AIR |
| Body Length | 0.126 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius at Zero Percent Rated Power | 155.0 |
| Reliability Indicator | NOT ESTABLISHED |
| Ambient Temp in Deg Celsius at Full Rated Power | 70.0 |
| 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 |
|---|---|
| RK73B2BLTD221J PRIMARY | Koa Speer Electronics Inc (USA) |
| Reference | Meaning |
|---|---|
| 705-3533-320 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 705-3533-320 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. |
| 705-3533 | D/9 Drawing number reference only Rockwell Collins, Inc. |
| RK73B2BL221J | 5/9 Secondary reference Koa Speer Electronics Inc |
| 705-3533 | D/9 Drawing number reference only Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5905-01-672-2641 is a Resistor,chip,fixed,film, manufactured by Koa Speer Electronics Inc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-672-2641 has 1 manufacturer part number on file: RK73B2BLTD221J (Koa Speer Electronics Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5905-01-672-2646, 5905-01-672-2649. Verify interchangeability with system specifications before substitution.
Key specifications for RK73B2BLTD221J: Resistance Tolerance in Percent: -5.0 TO 5.0; Electrical Resistance: 220.0 OHMS; Terminal Type: WRAP AROUND; Inclosure Method: ENCASED. 12 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.