The Filter,low Pass, cataloged under National Stock Number 5915-01-251-3500, is classified within Federal Supply Class 5915 (Filters and Networks) of the Electrical and Electronic Equipment Components group. The manufacturer of record is K&l Microwave Llc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5915-01-251-3500 |
| Primary Part Number | 4L250-12000/T18000-OP/O |
| Item Name | Filter,low Pass |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | K&l Microwave Llc |
| Status | ACTIVE |
| Reference Frequency Per Function | 6.2 GIGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Facility Type and Quantity | 2 TERMINAL LOCATION NOT OTHERWISE SPECIFIED |
| Voltage Standing Wave Ratio Per Function | 1.7 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Inclosure Type | ENCASED |
| Average Power Rating Per Function | 50.0 WATTS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Body Surface Treatment | GOLD |
| Precious Material | GOLD AND SILVER |
| Output Terminal Identification | SMA-PLUG |
| Body Outside Diameter | 0.250 INCHES NOMINAL IN |
| Source Impedance Rating Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Vibration Resistance Range in Hertz | +5.0 TO 25.0 |
| Output Terminal Manufacturer Code | 53711 |
| Style Designator | ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Features Provided | SHOCK RESISTANT |
| Body Material | METAL |
| Body Length | 1.341 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio Frequency Limits Per Function | 1.0 HERTZ BLANK AND 12.4 GIGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Input Terminal Manufacturer Code | 53711 |
| Discrimination at Specified Frequencies Per Function in Decibels | 60.0 MINIMUM BLANK AND 1.0 MAXIMUM BLANK FIRST FUNCTION |
| Principal Circuitry Type Per Function | INDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Frequency Band Width Per Function | 1.00 HERTZ BLANK AND 12.40 GIGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Input Terminal Identification | SMA-RECEPTACLE |
| Operating Temp Range | -20.0 TO 60.0 CELSIUS DEGC |
| Insertion Loss at Reference Frequency Per Function in Decibels | 0.5 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Load Impedance Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Specified Frequencies of Discrimination Per Function | 1.00 HERTZ BLANK AND 12.40 GIGAHERTZ BLANK AND 18.60 GIGAHERTZ BLANK AND 49.60 GIGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4L250-12000/T18000-OP/O PRIMARY | K&l Microwave Llc (USA) |
| Reference | Meaning |
|---|---|
| 5942681 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| L12 MA112 | 5/9 Secondary reference Spectrum Microwave, Inc. |
| 1206934 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5915-01-251-3500 is a Filter,low Pass, manufactured by K&l Microwave Llc, classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-251-3500 has 1 manufacturer part number on file: 4L250-12000/T18000-OP/O (K&l Microwave Llc).
Key specifications for 4L250-12000/T18000-OP/O: Reference Frequency Per Function: 6.2 GIGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED; Mounting Facility Type and Quantity: 2 TERMINAL LOCATION NOT OTHERWISE SPECIFIED; Voltage Standing Wave Ratio Per Function: 1.7 BLANK LOCATION NOT OTHERWISE SPECIFIED; Inclosure Type: ENCASED. 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.
NSN 5915-01-251-3500 has DEMIL Code D. 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.