The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-01-137-1391, is classified within Federal Supply Class 5915 (Filters and Networks) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Ems Development Corporation Dba Ems Development Corp. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5915-01-137-1391 |
| Primary Part Number | RF7251 |
| Item Name | Filter,radio Frequency Interfere |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | Ems Development Corporation Dba Ems Development Corp |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) FIRST FUNCTION |
| Mounting Facility Type and Quantity | 4 THREADED STUD(S) SECOND FUNCTION |
| Unpackaged Unit Weight | 11.000 POUNDS NOMINAL LBS |
| Inclosure Type | HERMETICALLY SEALED |
| Average Power Rating Per Function | 10.0 WATTS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Power Line Frequency Rating Per Function in Hertz | 60.0 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Functional Terminal Type and Quantity | 1 THREADED STUD INPUT FIRST FUNCTION |
| Functional Terminal Type and Quantity | 1 THREADED STUD OUTPUT SECOND FUNCTION |
| Source Impedance Rating Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Body Width | 3.500 INCHES NOMINAL IN |
| Body Height | 3.500 INCHES NOMINAL IN |
| Maximum Voltage Drop Per Function | 1.0 VOLTS AC BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Unthreaded Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Mounting Facility Screw Thread Series Designator | UNF |
| Nominal Thread Size | 0.190 INCHES IN |
| Body Length | 7.000 INCHES NOMINAL IN |
| Operating Voltage Rating and Type Per Function | 145.0 VOLTS AC BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Principal Circuitry Type Per Function | INDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Operating Current Rating Per Function in Amps | 35.0 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Operating Temp Range | -55.0 TO 85.0 CELSIUS DEGC |
| Maximum Temp Rise | 25.0 CELSIUS DEGC |
| Load Impedance Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RF7251 | Ems Development Corporation Dba Ems Development Corp (USA) |
| F-17135 | Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu (USA) |
| Reference | Meaning |
|---|---|
| RF07251 | C/1 Advisory reference — outside the item-of-supply concept Ems Development Corporation Dba Ems Development Corp |
| SM-A-776963-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5915-01-137-1391 is a Filter,radio Frequency Interfere, manufactured by Ems Development Corporation Dba Ems Development Corp, classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-137-1391 has 2 manufacturer part numbers on file: RF7251 (Ems Development Corporation Dba Ems Development Corp), F-17135 (Lcr Electronics, Inc Div Lcr Electronics, Inc. Dba Astrodyne Tdi Emi Filters Bu).
Key specifications for RF7251: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) FIRST FUNCTION; Mounting Facility Type and Quantity: 4 THREADED STUD(S) SECOND FUNCTION; Unpackaged Unit Weight: 11.000 POUNDS NOMINAL LBS; Inclosure Type: HERMETICALLY SEALED. 23 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.
NSN 5915-01-137-1391 has DEMIL Code B. 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.