The Transistor, cataloged under National Stock Number 5961-01-164-8405, is classified within Federal Supply Class 5961 (Semiconductor Devices and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Semitronics Corp. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-164-8405 |
| Primary Part Number | SM-A-921171 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Semitronics Corp |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | -80.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND -80.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND -70.0 MAXIMUM COLLECTOR TO EMITTER REVERSE VOLTAGE, WITH BASE SHORT-CIRCUITED TO EMITTER AND -7.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN |
| Maximum Operating Temp Per Measurement Point | 85.0 CELSIUS AMBIENT AIR DEGC |
| Mounting Facility Quantity | 2 |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-3 |
| Mounting Method | UNTHREADED HOLE(S) |
| Transfer Ratio | 40.0 MINIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER AND 150.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Features Provided | HERMETICALLY SEALED CASE |
| Current Rating Per Characteristic | 5.00 AMPERES MAXIMUM EMITTER CURRENT, DC |
| Terminal Type and Quantity | 2 PIN AND 1 CASE |
| Electrode Internally-Electrically Connected to Case | COLLECTOR |
| Power Rating Per Characteristic | 87.5 WATTS MAXIMUM TOTAL POWER DISSIPATION |
| 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 |
|---|---|
| SM-A-921171 | Semitronics Corp (USA) |
| Reference | Meaning |
|---|---|
| SM-A-921171 | 5/9 Secondary reference U.S. Government activity |
| SM-A-921171 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5961-01-164-8405 is a Transistor, manufactured by Semitronics Corp, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-164-8405 has 1 manufacturer part number on file: SM-A-921171 (Semitronics Corp).
Key specifications for SM-A-921171: Overall Height: 0.450 INCHES MAXIMUM IN; Voltage Rating in Volts Per Characteristic: -80.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND -80.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND -70.0 MAXIMUM COLLECTOR TO EMITTER REVERSE VOLTAGE, WITH BASE SHORT-CIRCUITED TO EMITTER AND -7.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Maximum Operating Temp Per Measurement Point: 85.0 CELSIUS AMBIENT AIR DEGC; Mounting Facility Quantity: 2. 13 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.