The Semiconductor Device,diode, cataloged under National Stock Number 5961-00-253-3550, 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 Microsemi Corp - Massachusetts. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 — Semiconductor Devices and Associated Hardware (FSG 59) |
| Manufacturers | Microsemi Corp - Massachusetts (CAGE 43611); Micro Uspd Inc (CAGE 12969) |
| Parameter | Value |
|---|---|
| NSN | 5961-00-253-3550 |
| Primary Part Number | MB335 |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Microsemi Corp - Massachusetts |
| Status | ACTIVE |
| 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 |
|---|---|
| MB335 PRIMARY | Microsemi Corp - Massachusetts (USA) |
| UTR3305 PRIMARY | Micro Uspd Inc (USA) |
| Reference | Meaning |
|---|---|
| 900301-001 | 1/2 Source control — Government-approved source U.S. Government activity |
| MB335 | 3/9 Design control — primary reference Microsemi Corporation |
NSN 5961-00-253-3550 is a Semiconductor Device,diode, manufactured by Microsemi Corp - Massachusetts, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-00-253-3550 has 2 manufacturer part numbers on file: MB335 (Microsemi Corp - Massachusetts), UTR3305 (Micro Uspd Inc).
1 possible match (shared part number, not a government interchangeability claim): 5961-00-884-1892. Verify interchangeability with system specifications before substitution.
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.