The Relay,electromagnetic, cataloged under National Stock Number 5945-00-644-5190, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Te Connectivity Corporation. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-644-5190 |
| Primary Part Number | SM4050 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Te Connectivity Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 7 ELECTRICAL PLUG CONNECTOR SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 115.0 AC AND 28.0 DC |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 250.0 MILLIAMPERES AC AND 500.0 MILLIAMPERES DC INDUCTIVE LOAD |
| Duty Type | CONTINUOUS |
| Winding DC Resistance Rating | 1.0 KILOHMS NOMINAL SINGLE WINDING |
| Nominal Operating Current Rating and Type | 4.50 MILLIAMPERES DC SINGLE WINDING |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 45.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| 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 |
|---|---|
| SM4050 PRIMARY | Te Connectivity Corporation (USA) |
NSN 5945-00-644-5190 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-644-5190 has 1 manufacturer part number on file: SM4050 (Te Connectivity Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5961-00-827-9711. Verify interchangeability with system specifications before substitution.
Key specifications for SM4050: Mounting Facility Type and Quantity: 7 ELECTRICAL PLUG CONNECTOR SINGLE MOUNTING FACILITY; Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 28.0 DC; Overall Diameter: 0.750 INCHES NOMINAL IN; Main Contact Load Current Rating at Maximum Rated Voltage: 250.0 MILLIAMPERES AC AND 500.0 MILLIAMPERES DC INDUCTIVE LOAD. 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.