The Semiconductor Device,diode, cataloged under National Stock Number 5961-00-978-9249, 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 Lacon Electronic Gmbh. Government technical data includes 13 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through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-00-978-9249 |
| Primary Part Number | 1N2981B |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Lacon Electronic Gmbh |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 17.0 MAXIMUM NOMINAL REGULATOR VOLTAGE |
| Mounting Facility Quantity | 1 |
| Overall Diameter | 0.424 INCHES MAXIMUM IN |
| Mounting Method | THREADED STUD(S) |
| Features Provided | HERMETICALLY SEALED CASE |
| Overall Width Across Flats | 0.424 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.190 INCHES IN |
| Current Rating Per Characteristic | 145.00 MILLIAMPERES MAXIMUM MAXIMUM REVERSE SURGE CURRENT |
| Specification/standard Data | 80131-RELEASE3398 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Material | SILICON SEMICONDUCTOR |
| Terminal Type and Quantity | 1 THREADED STUD AND 1 TAB, SOLDER LUG |
| Thread Series Designator | UNF |
| Power Rating Per Characteristic | 10.0 WATTS MAXIMUM TOTAL 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 |
| Part Number | Manufacturer |
|---|---|
| 1N2981B | Lacon Electronic Gmbh (DEU) |
| 1N2981B | International Diode Corp (USA) |
| Reference | Meaning |
|---|---|
| 1N2981B | 5/9 Secondary reference U.S. Government activity |
| 1N2981B | 5/9 Secondary reference Trw Electronics and Defense Sector Rf Devices |
| 1N2981B | 5/9 Secondary reference U.S. Government activity |
| RELEASE3398 | 5/9 Secondary reference U.S. Government activity |
| 1N2981B | 5/9 Secondary reference Freescale Semiconductor, Inc. |
| 1N2981B | 5/9 Secondary reference Microsemi Corp.-Scottsdale Dba Microsemi |
| 1N2981B | 3/9 Design control — primary reference U.S. Government activity |
| 1N2981B | 5/9 Secondary reference Espey Mfg and Electronics Corp |
| 1N2981B | 5/9 Secondary reference Electronic Transistors Corp |
| 1N2981B | 5/9 Secondary reference U.S. Government activity |
| 1N2981B | 5/9 Secondary reference General Semiconductor Industries Inc |
| 1N2981B | 5/9 Secondary reference Adelco Elektronik Gmbh |
| 1N2981B | 5/9 Secondary reference St-Semicon Inc |
| 1N2981BA | 5/9 Secondary reference Adelco Elektronik Gmbh |
NSN 5961-00-978-9249 is a Semiconductor Device,diode, manufactured by Lacon Electronic Gmbh, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-00-978-9249 has 2 manufacturer part numbers on file: 1N2981B (Lacon Electronic Gmbh), 1N2981B (International Diode Corp).
Key specifications for 1N2981B: Voltage Rating in Volts Per Characteristic: 17.0 MAXIMUM NOMINAL REGULATOR VOLTAGE; Mounting Facility Quantity: 1; Overall Diameter: 0.424 INCHES MAXIMUM IN; Mounting Method: THREADED STUD(S). 13 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.