The Transistor, cataloged under National Stock Number 5961-00-766-2947, 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 Osi Optoelectronics, Inc Dba Semicoa. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5961-00-766-2947 |
| Primary Part Number | 2N491B |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — No Item Name Available |
| Manufacturer | Osi Optoelectronics, Inc Dba Semicoa |
| Status | CANCELLED |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Terminal Type and Quantity | 3 UNINSULATED WIRE LEAD |
| Overall Diameter | 0.370 INCHES MAXIMUM IN |
| Mounting Method | TERMINAL |
| Power Rating Per Characteristic | 450.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION |
| Features Provided | HERMETICALLY SEALED CASE |
| Semiconductor Material | SILICON |
| Terminal Circle Diameter | 0.200 INCHES NOMINAL IN |
| Specification/standard Data | 80131-RELEASE3648 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Current Rating Per Characteristic | 6.00 MICROAMPERES MAXIMUM PEAK POINT CURRENT |
| Internal Configuration | JUNCTION CONTACT |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2N491B | Osi Optoelectronics, Inc Dba Semicoa (USA) |
| RELEASE4064 | Electronic Industries Association |
| 2N491B | Electronic Industries Association |
| 2N491B | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 2N2419B | Electronic Industries Association |
| KS19777L2 | Lucent Technologies Inc Dba Federal Marketing Group (USA) |
| RELEASE3648 | Electronic Industries Association |
| 2N2419B | General Electric Co Semi-Conductor Products Dept Power Components Opn (USA) |
| 2N491B | Csr Industries Inc (USA) |
| 2N491B | General Electric Company (USA) |
| 2N491B | Solid State Devices, Inc (USA) |
| 2N491B | Texas Instruments Incorporated (USA) |
NSN 5961-00-766-2947 is a Transistor, manufactured by Osi Optoelectronics, Inc Dba Semicoa, classified under FSC 5961 (No Item Name Available). Status: cancelled.
NSN 5961-00-766-2947 has 12 cross-referenced part numbers: 2N491B (Osi Optoelectronics, Inc Dba Semicoa), RELEASE4064 (Electronic Industries Association), 2N491B (Electronic Industries Association), 2N491B (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 2N2419B (Electronic Industries Association) and 7 more.
There are 4 known substitutes for 5961-00-766-2947: 5961-00-239-9589, 5961-00-777-6536, 5961-00-913-2863 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2N491B: Terminal Length: 1.500 INCHES MINIMUM IN; Overall Length: 0.260 INCHES MAXIMUM IN; Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD; Special Features: JUNCTION PATTERN ARRANGEMENT: PNP. 13 total characteristics are documented in the Federal Logistics Information System.
NSN 5961-00-766-2947 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.