The Transistor, cataloged under National Stock Number 5961-01-014-0663, 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 Sprague Electric Co World Hqs. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-014-0663 |
| Primary Part Number | TP4257 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Sprague Electric Co World Hqs |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 6.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 6.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 4.5 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN |
| Maximum Operating Temp Per Measurement Point | 125.0 CELSIUS JUNCTION DEGC |
| Overall Diameter | 0.215 INCHES MAXIMUM IN |
| Terminal Length | 0.400 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Material | PLASTIC ENCLOSURE |
| Terminal Type and Quantity | 3 PIN |
| Terminal Circle Diameter | 0.100 INCHES NOMINAL IN |
| Power Rating Per Characteristic | 0.5 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 |
|---|---|
| TP4257 | Sprague Electric Co World Hqs (USA) |
| Reference | Meaning |
|---|---|
| 369603 | 3/2 Design control — primary reference U.S. Government activity |
| 2N4257 | 5/9 Secondary reference Fairchild Semiconductor Corp |
| 2N4257 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 4818-369603 | 5/2 Secondary reference U.S. Government activity |
NSN 5961-01-014-0663 is a Transistor, manufactured by Sprague Electric Co World Hqs, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-014-0663 has 1 manufacturer part number on file: TP4257 (Sprague Electric Co World Hqs).
Key specifications for TP4257: Voltage Rating in Volts Per Characteristic: 6.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 6.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 4.5 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Maximum Operating Temp Per Measurement Point: 125.0 CELSIUS JUNCTION DEGC; Overall Diameter: 0.215 INCHES MAXIMUM IN; Terminal Length: 0.400 INCHES MINIMUM IN. 11 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.