The Transistor, cataloged under National Stock Number 5961-01-239-6523, 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 National Semiconductor Corporation. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5961-01-239-6523 |
| Primary Part Number | BC179B |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | National Semiconductor Corporation |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 25.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN |
| Mounting Facility Quantity | 3 |
| Overall Diameter | 0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Terminal Length | 0.500 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Current Rating Per Characteristic | 100.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC |
| Terminal Type and Quantity | 3 PIN |
| Power Rating Per Characteristic | 750.0 MILLIWATTS NOMINAL COLLECTOR POWER DISSIPATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BC179B PRIMARY | National Semiconductor Corporation (USA) |
| BC179B | British Sarozal Ltd (GBR) |
| Reference | Meaning |
|---|---|
| BC179B | 3/9 Design control — primary reference Freescale Semiconductor, Inc. |
| BC179B | 5/9 Secondary reference National Semiconductor Corp |
NSN 5961-01-239-6523 is a Transistor, manufactured by National Semiconductor Corporation, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-239-6523 has 2 manufacturer part numbers on file: BC179B (National Semiconductor Corporation), BC179B (British Sarozal Ltd).
Key specifications for BC179B: Overall Height: 0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN; Voltage Rating in Volts Per Characteristic: 25.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Mounting Facility Quantity: 3; Overall Diameter: 0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN. 10 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.
NSN 5961-01-239-6523 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.