The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-015-0391, 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 British Sarozal Ltd. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-015-0391 |
| Primary Part Number | BB139 |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | British Sarozal Ltd |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 30.0 MAXIMUM REVERSE VOLTAGE, PEAK |
| Overall Diameter | 0.062 INCHES NOMINAL IN |
| Terminal Length | 0.500 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Features Provided | HERMETICALLY SEALED CASE |
| Material | SILICON SEMICONDUCTOR |
| Terminal Type and Quantity | 2 UNINSULATED 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 |
|---|---|
| BB139 | British Sarozal Ltd (GBR) |
| Reference | Meaning |
|---|---|
| BB139 | 5/9 Secondary reference Itt Semiconductors a Division of International Telephone and Telegraph Corp |
| 147012P1 | 3/2 Design control — primary reference U.S. Government activity |
| ITT109 | 5/9 Secondary reference Itt Semiconductors a Division of International Telephone and Telegraph Corp |
NSN 5961-01-015-0391 is a Semiconductor Device,diode, manufactured by British Sarozal Ltd, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-015-0391 has 1 manufacturer part number on file: BB139 (British Sarozal Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-213-2920. Verify interchangeability with system specifications before substitution.
Key specifications for BB139: Voltage Rating in Volts Per Characteristic: 30.0 MAXIMUM REVERSE VOLTAGE, PEAK; Overall Diameter: 0.062 INCHES NOMINAL IN; Terminal Length: 0.500 INCHES MINIMUM IN; Mounting Method: TERMINAL. 7 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.