The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-01-221-1674, is classified within Federal Supply Class 5915 (Filters and Networks) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu. Government technical data includes 26 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5915-01-221-1674 |
| Primary Part Number | F-1961-3WS |
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) FIRST FUNCTION |
| Inclosure Type | ENCASED |
| Body Surface Treatment | TIN |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 16.000 INCHES NOMINAL IN |
| Power Line Frequency Rating Per Function in Hertz | 400.0 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Power Line Frequency Rating Per Function in Hertz | 400.0 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Power Line Frequency Rating Per Function in Hertz | 400.0 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Source Impedance Rating Per Function | 50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Source Impedance Rating Per Function | 50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Source Impedance Rating Per Function | 50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Body Width | 28.000 INCHES NOMINAL IN |
| Unthreaded Mounting Hole Diameter | 0.375 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Body Material | METAL |
| Body Length | 15.000 INCHES NOMINAL IN |
| Operating Voltage Rating and Type Per Function | 250.0 VOLTS AC 2ND RADIO INTERFERENCE AND 600.0 VOLTS DC 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Operating Voltage Rating and Type Per Function | 250.0 VOLTS AC 1ST RADIO INTERFERENCE AND 600.0 VOLTS DC 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Operating Voltage Rating and Type Per Function | 250.0 VOLTS AC 3RD RADIO INTERFERENCE AND 600.0 VOLTS DC 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 23.000 INCHES NOMINAL IN |
| Principal Circuitry Type Per Function | INDUCTANCE-CAPACITANCE BLANK FIRST FUNCTION |
| Operating Current Rating Per Function in Amps | 30.0 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Operating Current Rating Per Function in Amps | 30.0 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Operating Current Rating Per Function in Amps | 30.0 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Load Impedance Per Function | 50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION |
| Load Impedance Per Function | 50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION |
| Load Impedance Per Function | 50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| F-1961-3WS PRIMARY | Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu (USA) |
NSN 5915-01-221-1674 is a Filter,radio Frequency Interfere, manufactured by Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu, classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-221-1674 has 1 manufacturer part number on file: F-1961-3WS (Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu).
Key specifications for F-1961-3WS: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) FIRST FUNCTION; Overall Height: 4.430 INCHES NOMINAL IN; Inclosure Type: ENCASED; Body Surface Treatment: TIN. 26 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.