The Transistor, cataloged under National Stock Number 5961-01-519-0504, 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 Te Connectivity Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-519-0504 |
| Primary Part Number | MRF428 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Te Connectivity Corporation |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 55.0 NOMINAL COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN |
| Internal Junction Configuration | NPN |
| Semiconductor Material | SILICON |
| Current Rating Per Characteristic | 20.00 AMPERES NOMINAL COLLECTOR CURRENT, DC |
| Power Rating Per Characteristic | 320.0 WATTS NOMINAL OFF-STATE 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 |
NSN 5961-01-519-0504 is a Transistor, manufactured by Te Connectivity Corporation, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-519-0504 has 3 manufacturer part numbers on file: MRF428 (Te Connectivity Corporation), SRFE1157 (Te Connectivity Corporation), 2261014 (Tkms Hagenuk Marinekommunikation Gmbh).
2 possible matches (shared part number, not a government interchangeability claim): 5961-01-594-7968, 5961-01-619-1809. Verify interchangeability with system specifications before substitution.
Key specifications for MRF428: Overall Height: 0.229 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN; Voltage Rating in Volts Per Characteristic: 55.0 NOMINAL COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN; Internal Junction Configuration: NPN; Semiconductor Material: SILICON. 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.