The Semiconductor Device,diode, cataloged under National Stock Number 5961-00-552-0147, 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 Ampex Data Systems Corporation Dba Ampex Intelligent Systems. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5961-00-552-0147 |
| Primary Part Number | 1N128 |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Ampex Data Systems Corporation Dba Ampex Intelligent Systems |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 40.0 MAXIMUM REVERSE VOLTAGE, PEAK |
| Maximum Operating Temp Per Measurement Point | 90.0 CELSIUS AMBIENT AIR DEGC |
| Overall Diameter | 0.105 INCHES NOMINAL IN |
| Terminal Length | 1.000 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Features Provided | HERMETICALLY SEALED CASE |
| Current Rating Per Characteristic | 10.00 MICROAMPERES MAXIMUM REVERSE CURRENT, DC |
| Material | GLASS ENCLOSURE |
| Material | GERMANIUM SEMICONDUCTOR |
| Terminal Type and Quantity | 2 UNINSULATED WIRE LEAD |
| Power Rating Per Characteristic | 80.0 MILLIWATTS 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 |
|---|---|
| 1N128 | Ampex Data Systems Corporation Dba Ampex Intelligent Systems (USA) |
| Reference | Meaning |
|---|---|
| RELEASE1164 | 5/9 Secondary reference U.S. Government activity |
| 1N128 | 5/9 Secondary reference U.S. Government activity |
| 1N128 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5961-00-552-0147 is a Semiconductor Device,diode, manufactured by Ampex Data Systems Corporation Dba Ampex Intelligent Systems, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-00-552-0147 has 1 manufacturer part number on file: 1N128 (Ampex Data Systems Corporation Dba Ampex Intelligent Systems).
2 possible matches (shared part number, not a government interchangeability claim): 5961-00-811-4852, 5961-01-054-3311. Verify interchangeability with system specifications before substitution.
Key specifications for 1N128: Voltage Rating in Volts Per Characteristic: 40.0 MAXIMUM REVERSE VOLTAGE, PEAK; Maximum Operating Temp Per Measurement Point: 90.0 CELSIUS AMBIENT AIR DEGC; Overall Diameter: 0.105 INCHES NOMINAL IN; Terminal Length: 1.000 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.