The Attenuator,fixed, cataloged under National Stock Number 5985-00-991-3544, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-991-3544 |
| Primary Part Number | 1801445-10 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Frequency Range | 0.000 HERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Attenuation Accuracy Reference Frequency | 2.0 GIGAHERTZ |
| Overall Diameter | 0.812 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.20 AND 1.50 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 22.0 |
| Attenuation Accuracy in Decibels | -1.00 TO 1.00 |
| Connection Type Per Function | FEMALE INPUT AND MALE OUTPUT |
| Operating Temp Range | -20.0 TO 125.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 2.0 GIGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Material | COPPER BODY |
| Unpackaged Unit Weight | 1.500 OUNCES OZ |
| Power Rating | 1.0 WATTS AVERAGE |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | N |
| 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 |
|---|---|
| MDC90182-N-22 | Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc (USA) |
| 1801445-10 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1801445-10REVA | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| FP50-22 | 5/9 Secondary reference Trilithic, Inc. |
| FP50-22DB | C/1 Advisory reference — outside the item-of-supply concept Trilithic, Inc. |
NSN 5985-00-991-3544 is a Attenuator,fixed, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-991-3544 has 2 manufacturer part numbers on file: MDC90182-N-22 (Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc), 1801445-10 (Northrop Grumman Systems Corporation).
Key specifications for 1801445-10: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Frequency Range: 0.000 HERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Attenuation Accuracy Reference Frequency: 2.0 GIGAHERTZ. 20 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 5985-00-991-3544 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.