The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-265-0336, 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 Protek Devices Lp Dba Protek Devices. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5961-01-265-0336 |
| Primary Part Number | 1.5KE400CA |
| Item Name | Semiconductor Device,diode |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Protek Devices Lp Dba Protek Devices |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 420.0 MAXIMUM BREAKDOWN VOLTAGE, DC |
| Maximum Operating Temp Per Measurement Point | 175.0 CELSIUS AMBIENT AIR DEGC |
| Overall Diameter | 0.205 INCHES MAXIMUM IN |
| Terminal Length | 1.100 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Current Rating Per Characteristic | 1.00 MILLIAMPERES MAXIMUM REVERSE CURRENT, DC |
| Function for Which Designed | TRANSIENT SUPPRESSOR |
| Material | SILICON SEMICONDUCTOR |
| Material | PLASTIC ENCLOSURE |
| Terminal Type and Quantity | 2 UNINSULATED WIRE LEAD |
| Power Rating Per Characteristic | 1500.0 WATTS MAXIMUM TURN-ON 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 |
|---|---|
| EC2148 | Mcgeoch Technology Ltd (GBR) |
| 1.5KE400CA PRIMARY | Protek Devices Lp Dba Protek Devices (USA) |
| 1.5KE400CA GSI AC 400V | Hunter Electronic Components Ltd (GBR) |
| 40063534 | Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt) (GBR) |
| 1.5KE400CA | Hunter Electronic Components Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 100 6051 | 5/9 Secondary reference Aeronautical & General Instruments Limited |
| EC2148 | 5/9 Secondary reference Mcgeoch William & Co (birmingham) Ltd |
| 1.5KE400CA | 5/9 Secondary reference General Semiconductor Industries Inc |
NSN 5961-01-265-0336 is a Semiconductor Device,diode, manufactured by Protek Devices Lp Dba Protek Devices, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-265-0336 has 5 manufacturer part numbers on file: EC2148 (Mcgeoch Technology Ltd), 1.5KE400CA (Protek Devices Lp Dba Protek Devices), 1.5KE400CA GSI AC 400V (Hunter Electronic Components Ltd), 40063534 (Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt)), 1.5KE400CA (Hunter Electronic Components Ltd).
2 possible matches (shared part number, not a government interchangeability claim): 5961-01-500-5378, 5961-01-564-8544. Verify interchangeability with system specifications before substitution.
Key specifications for 1.5KE400CA: Voltage Rating in Volts Per Characteristic: 420.0 MAXIMUM BREAKDOWN VOLTAGE, DC; Maximum Operating Temp Per Measurement Point: 175.0 CELSIUS AMBIENT AIR DEGC; Overall Diameter: 0.205 INCHES MAXIMUM IN; Terminal Length: 1.100 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.