The Semiconductor Device,photo, cataloged under National Stock Number 5961-01-178-7852, 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 Memco, Inc. Dba Military Electronics Manufacturing. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5961-01-178-7852 |
| Primary Part Number | 21K241 |
| Item Name | Semiconductor Device,photo |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Memco, Inc. Dba Military Electronics Manufacturing |
| Status | ACTIVE |
| Overall Diameter | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Material | GLASS ENCLOSURE |
| Response Time | 50.0 MILLISECONDS NOMINAL MS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21K241 PRIMARY | Memco, Inc. Dba Military Electronics Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 597416-1 | 1/2 Source control — Government-approved source U.S. Government activity |
| 597416-1 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
NSN 5961-01-178-7852 is a Semiconductor Device,photo, manufactured by Memco, Inc. Dba Military Electronics Manufacturing, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-178-7852 has 1 manufacturer part number on file: 21K241 (Memco, Inc. Dba Military Electronics Manufacturing).
Key specifications for 21K241: Overall Height: 0.140 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN; Overall Diameter: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Part Name Assigned by Controlling Agency: PHOTOELECTRIC CELL; Material: GLASS ENCLOSURE. 3 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.
NSN 5961-01-178-7852 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.