The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-177-4287, 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 Micro Quality Semiconductor Inc Sub of Microsemi Corp. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5961-01-177-4287 |
| Primary Part Number | HES514Q |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Micro Quality Semiconductor Inc Sub of Microsemi Corp |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 150.0 MAXIMUM REVERSE VOLTAGE, DC |
| Maximum Operating Temp Per Measurement Point | 175.0 CELSIUS AMBIENT AIR DEGC |
| Mounting Method | TERMINAL |
| Material | SILICON SEMICONDUCTOR |
| Terminal Type and Quantity | 2 PIN |
| 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 |
|---|---|
| HES514Q | Micro Quality Semiconductor Inc Sub of Microsemi Corp (USA) |
| UTG5319 | Micro Uspd Inc (USA) |
| Reference | Meaning |
|---|---|
| VHE 2603 | 5/1 Secondary reference Micro Quality Semiconductor Inc Sub of Microsemi Corp |
| D25130A-01 | 3/2 Design control — primary reference U.S. Government activity |
| UES 2603 | 5/1 Secondary reference Micro Uspd Inc |
NSN 5961-01-177-4287 is a Semiconductor Device,diode, manufactured by Micro Quality Semiconductor Inc Sub of Microsemi Corp, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-177-4287 has 2 manufacturer part numbers on file: HES514Q (Micro Quality Semiconductor Inc Sub of Microsemi Corp), UTG5319 (Micro Uspd Inc).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-350-9539. Verify interchangeability with system specifications before substitution.
Key specifications for HES514Q: Voltage Rating in Volts Per Characteristic: 150.0 MAXIMUM REVERSE VOLTAGE, DC; Maximum Operating Temp Per Measurement Point: 175.0 CELSIUS AMBIENT AIR DEGC; Mounting Method: TERMINAL; Overall Length: 1.177 INCHES MINIMUM AND 1.197 INCHES MAXIMUM IN. 5 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.