The Transistor, cataloged under National Stock Number 5961-00-979-0108, 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 Osi Optoelectronics, Inc Dba Semicoa. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 26 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5961-00-979-0108 |
| Primary Part Number | 2N4037 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Osi Optoelectronics, Inc Dba Semicoa |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 40.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN |
| Overall Diameter | 0.370 INCHES MAXIMUM IN |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Criticality Code Justification | FEAT |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Features Provided | HERMETICALLY SEALED CASE |
| Current Rating Per Characteristic | 500.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC AND 1.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC |
| Specification/standard Data | 80131-RELEASE5205 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Terminal Type and Quantity | 3 UNINSULATED WIRE LEAD |
| Terminal Circle Diameter | 0.200 INCHES NOMINAL IN |
| Electrode Internally-Electrically Connected to Case | COLLECTOR |
| Power Rating Per Characteristic | 1.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 2N4037 | Osi Optoelectronics, Inc Dba Semicoa (USA) |
| 2N4037 | Semiconductor Technology, Inc. Dba Semiconductor Technology Inc (USA) |
| 2N4037 | Fairchild Semiconductor Corp (USA) |
| 2N4037 | Central Semiconductor, Llc Dba Central Semiconductor Corp (USA) |
| 2N4037 | Hewlett-Packard Company Dba HP (USA) |
| 2N4037 | National Semiconductor Corporation (USA) |
| 1853-0051 | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 2N4037 | 5/9 Secondary reference Electronic Transistors Corp |
| 2N4037 | 5/9 Secondary reference Rca Corp New Products Div |
| 2N4037 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| RELEASE5205 | 5/9 Secondary reference U.S. Government activity |
| 1853-0051 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 2N4037 | 5/9 Secondary reference Adelco Elektronik Gmbh |
| 5961PL1387323 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| JAN2N4037 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 50203-5 | C/1 Advisory reference — outside the item-of-supply concept Victor Technologies Inc |
| 2N4037 | 5/9 Secondary reference U.S. Government activity |
| 1853-0051 | 5/9 Secondary reference Keysight Technologies, Inc. |
| 2N4037 | 5/9 Secondary reference Rca Corp Distributor and Special Products Div |
| 111945 | 5/2 Secondary reference U.S. Government activity |
| 10543776 | 5/1 Secondary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| 352-0714-020 | 5/2 Secondary reference U.S. Government activity |
| 100160-001 | 5/9 Secondary reference Cipher Data Products Inc |
| 05190 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 014-723 | 5/9 Secondary reference U.S. Government activity |
| 2N4037 | 5/9 Secondary reference Texas Instruments Incorporated |
| A3091 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5961-00-979-0108 is a Transistor, manufactured by Osi Optoelectronics, Inc Dba Semicoa, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-00-979-0108 has 7 manufacturer part numbers on file: 2N4037 (Osi Optoelectronics, Inc Dba Semicoa), 2N4037 (Semiconductor Technology, Inc. Dba Semiconductor Technology Inc), 2N4037 (Fairchild Semiconductor Corp), 2N4037 (Central Semiconductor, Llc Dba Central Semiconductor Corp), 2N4037 (Hewlett-Packard Company Dba HP) and 2 more.
4 possible matches (shared part number, not a government interchangeability claim): 5970-01-086-8540, 4420-01-163-7551, 4730-01-163-9673. Verify interchangeability with system specifications before substitution.
Key specifications for 2N4037: Voltage Rating in Volts Per Characteristic: 60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 40.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN; Overall Diameter: 0.370 INCHES MAXIMUM IN; Terminal Length: 1.500 INCHES MINIMUM IN; Mounting Method: TERMINAL. 14 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.