The Transistor, cataloged under National Stock Number 5961-00-121-4990, is classified within Federal Supply Class 5961 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Struthers-Dunn Inc.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5961-00-121-4990 |
| Primary Part Number | B5493158 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — No Item Name Available |
| Manufacturer | Struthers-Dunn Inc. |
| Status | CANCELLED |
| Power Rating Per Characteristic | 90.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION |
| Overall Diameter | 0.875 INCHES MAXIMUM IN |
| Terminal Type and Quantity | 2 UNINSULATED WIRE LEAD AND 1 CASE |
| Internal Configuration | JUNCTION CONTACT |
| Maximum Operating Temp Per Measurement Point | 100.0 CELSIUS JUNCTION DEGC |
| Features Provided | HERMETICALLY SEALED CASE |
| Test Data Document | 81349-MIL-S-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Mounting Facility Quantity | 2 |
| Mounting Method | UNTHREADED HOLE(S) |
| Current Rating Per Characteristic | 5.00 AMPERES MAXIMUM BASE CURRENT, DC AND -15.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC |
| Semiconductor Material | GERMANIUM |
| Voltage Rating in Volts Per Characteristic | -60.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND -30.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND -30.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN |
| Unable to Decode | UNABLE TO DECODE |
| Specification/standard Data | 81349-MIL-S-19500/330 GOVERNMENT SPECIFICATION |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B5493158 | Struthers-Dunn Inc. (USA) |
| JAN2N1558AA | Lacon Electronic Gmbh (DEU) |
| 345-124-010 | L3harris Interstate Electronics Corporation (USA) |
| JAN2N1558AA | Adelco Elektronik Gmbh (DEU) |
| MIL-S-19500/330 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| JAN2N1558A | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 2N678A | Philips Semiconductors Inc (USA) |
| 2N678A | Electronic Industries Association |
| 40002275-000 | Dne Technologies, Inc (USA) |
NSN 5961-00-121-4990 is a Transistor, manufactured by Struthers-Dunn Inc., classified under FSC 5961 (No Item Name Available). Status: cancelled.
NSN 5961-00-121-4990 has 9 cross-referenced part numbers: B5493158 (Struthers-Dunn Inc.), JAN2N1558AA (Lacon Electronic Gmbh), 345-124-010 (L3harris Interstate Electronics Corporation), JAN2N1558AA (Adelco Elektronik Gmbh), MIL-S-19500/330 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 4 more.
There are 3 known substitutes for 5961-00-121-4990: 5961-00-069-2037, 5961-00-104-9899, 5961-00-987-4692. Verify interchangeability with system specifications before substitution.
Key specifications for B5493158: Power Rating Per Characteristic: 90.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION; Overall Diameter: 0.875 INCHES MAXIMUM IN; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD AND 1 CASE; Internal Configuration: JUNCTION CONTACT. 16 total characteristics are documented in the Federal Logistics Information System.
NSN 5961-00-121-4990 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.