The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-067-1074, 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 Powerex, Inc.. Government technical data includes 12 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5961-01-067-1074 |
| Primary Part Number | 1N3740R |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Powerex, Inc. |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 600.0 MAXIMUM REVERSE VOLTAGE, PEAK |
| Maximum Operating Temp Per Measurement Point | 200.0 CELSIUS JUNCTION DEGC |
| Mounting Facility Quantity | 1 |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | DO-9 |
| Mounting Method | THREADED STUD(S) |
| Features Provided | HERMETICALLY SEALED CASE |
| Overall Width Across Flats | 1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.750 INCHES IN |
| Current Rating Per Characteristic | 12.00 MILLIAMPERES MAXIMUM REVERSE CURRENT, AVERAGE AND 250.00 AMPERES MAXIMUM FORWARD CURRENT, DC |
| Material | SILICON SEMICONDUCTOR |
| Terminal Type and Quantity | 1 THREADED STUD AND 1 UNINSULATED WIRE LEAD W/TERMINAL LUG |
| 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 |
|---|---|
| 1N3740R | Microsemi Corp - Massachusetts (USA) |
| 1N3740R PRIMARY | Powerex, Inc. (USA) |
| Reference | Meaning |
|---|---|
| RELEASE3925 | 5/9 Secondary reference U.S. Government activity |
| 1N3740R | 5/9 Secondary reference U.S. Government activity |
| 1N3740R | 5/2 Secondary reference U.S. Government activity |
| 1N37407 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 1N3740R | 5/9 Secondary reference General Electric Co Semi-Conductor Products Dept |
| RK91M | C/1 Advisory reference — outside the item-of-supply concept Kinetics Industries Inc |
| 1N3740R | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5961-01-067-1074 is a Semiconductor Device,diode, manufactured by Powerex, Inc., classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-067-1074 has 2 manufacturer part numbers on file: 1N3740R (Microsemi Corp - Massachusetts), 1N3740R (Powerex, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-118-8456. Verify interchangeability with system specifications before substitution.
Key specifications for 1N3740R: Voltage Rating in Volts Per Characteristic: 600.0 MAXIMUM REVERSE VOLTAGE, PEAK; Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC; Mounting Facility Quantity: 1; Joint Electronic Device Engineering Council/jedec/case Outline Designation: DO-9. 12 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.