The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-511-0019, 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. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-511-0019 |
| Primary Part Number | D8443 |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Microsemi Corp - Massachusetts |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 400.0 MAXIMUM REPETITIVE PEAK REVERSE VOLTAGE |
| Mounting Facility Quantity | 1 |
| Mounting Method | THREADED STUD(S) |
| Overall Width Across Flats | 0.677 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Current Rating Per Characteristic | 40.00 AMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE |
| Function for Which Designed | RECTIFIER |
| Thread Quantity Per Inch | 28 |
| Material | SILICON SEMICONDUCTOR |
| Terminal Type and Quantity | 1 TAB, SOLDER LUG AND 1 THREADED STUD |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| D8443 PRIMARY | Microsemi Corp - Massachusetts (USA) |
| MIS-19836/91 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 40HFL40S05 | 3/9 Design control — primary reference International Rectifier Corporation |
NSN 5961-01-511-0019 is a Semiconductor Device,diode, manufactured by Microsemi Corp - Massachusetts, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-511-0019 has 2 manufacturer part numbers on file: D8443 (Microsemi Corp - Massachusetts), MIS-19836/91 (Us Army Aviation and Missile Command).
Key specifications for D8443: Voltage Rating in Volts Per Characteristic: 400.0 MAXIMUM REPETITIVE PEAK REVERSE VOLTAGE; Mounting Facility Quantity: 1; Mounting Method: THREADED STUD(S); Overall Length: 1.453 INCHES MAXIMUM IN. 11 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.