The Transistor, cataloged under National Stock Number 5961-00-421-3042, 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 Microsemi Corp - Massachusetts. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-00-421-3042 |
| Primary Part Number | NSA2538 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Microsemi Corp - Massachusetts |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 250.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 4.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC |
| Maximum Operating Temp Per Measurement Point | 200.0 CELSIUS JUNCTION DEGC |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-39 |
| Overall Diameter | 0.360 INCHES MAXIMUM IN |
| Precious Material | GOLD |
| Terminal Length | 0.500 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Features Provided | HERMETICALLY SEALED CASE |
| Current Rating Per Characteristic | 500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC |
| Precious Material and Location | TERMINAL SURFACES GOLD |
| Test Data Document | 88818-C532000428 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Terminal Type and Quantity | 3 UNINSULATED WIRE LEAD |
| Terminal Circle Diameter | 0.200 INCHES NOMINAL IN |
| Power Rating Per Characteristic | 5.0 WATTS MAXIMUM TOTAL DEVICE 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 |
|---|---|
| NSA2538 | Microsemi Corp - Massachusetts (USA) |
| Reference | Meaning |
|---|---|
| C532000428 | 3/2 Design control — primary reference U.S. Government activity |
| SS4238H | 5/9 Secondary reference Freescale Semiconductor, Inc. |
NSN 5961-00-421-3042 is a Transistor, manufactured by Microsemi Corp - Massachusetts, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-00-421-3042 has 1 manufacturer part number on file: NSA2538 (Microsemi Corp - Massachusetts).
Key specifications for NSA2538: Voltage Rating in Volts Per Characteristic: 250.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 4.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC; Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-39; Overall Diameter: 0.360 INCHES MAXIMUM IN. 16 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.