The Resistor,thermal, cataloged under National Stock Number 5905-01-088-0878, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell International Inc. Dba Honeywell Div Sensing & Control. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-088-0878 |
| Primary Part Number | KB21J22 |
| Item Name | Resistor,thermal |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Honeywell International Inc. Dba Honeywell Div Sensing & Control |
| Status | ACTIVE |
| Inclosure Type | ENCAPSULATED |
| Terminal Diameter | 0.010 INCHES NOMINAL IN |
| Terminal Length | 2.000 INCHES NOMINAL IN |
| Body Width | 0.035 INCHES NOMINAL IN |
| Body Height | 0.055 INCHES NOMINAL IN |
| Reference Temp in Deg Celsius | 25.0 |
| Style Designator | WAFER |
| Power Dissipation Constant in Milliwatts Per Deg Celsius | 2.5 |
| Zero Power Resistance | 100.000 OHMS |
| Thermal Time Constant in Seconds | 7.0 |
| Zero Power Resistance Tolerance in Percent at Reference Temp | -10.0 TO 10.0 |
| Body Length | 0.055 INCHES NOMINAL IN |
| Zero Power Temp Coefficient of Resistance in Percent Per Deg Celsius | -3.90 |
| Reliability Indicator | NOT ESTABLISHED |
| Terminal Type and Quantity | 2 WIRE LEAD |
| 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 |
|---|---|
| KB21J22 | Honeywell International Inc. Dba Honeywell Div Sensing & Control (USA) |
| C1205HXXX | Ohmite Holding, L.l.c. (USA) |
| 2D2191 | Therm-O-Disc Inc Sub of Emerson Electric Co (USA) |
| 2DB101K | Rtie Holdings Llc (USA) |
| Reference | Meaning |
|---|---|
| C247 | 5/9 Secondary reference Sierracin/western Thermistor |
| 307-0126-00 | 3/2 Design control — primary reference U.S. Government activity |
| 2D21-101K | 5/9 Secondary reference Avox Systems Inc Dba Avox Systems Inc |
| 2D21-101-D | 5/9 Secondary reference Cal-R Inc |
| 2D21-101-D | 5/9 Secondary reference Avox Systems Inc Dba Avox Systems Inc |
NSN 5905-01-088-0878 is a Resistor,thermal, manufactured by Honeywell International Inc. Dba Honeywell Div Sensing & Control, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-088-0878 has 4 manufacturer part numbers on file: KB21J22 (Honeywell International Inc. Dba Honeywell Div Sensing & Control), C1205HXXX (Ohmite Holding, L.l.c.), 2D2191 (Therm-O-Disc Inc Sub of Emerson Electric Co), 2DB101K (Rtie Holdings Llc).
Key specifications for KB21J22: Inclosure Type: ENCAPSULATED; Terminal Diameter: 0.010 INCHES NOMINAL IN; Terminal Length: 2.000 INCHES NOMINAL IN; Body Width: 0.035 INCHES NOMINAL IN. 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.