The Attenuator,fixed, cataloged under National Stock Number 5985-01-258-3485, 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 Semic Rf Electronic Gmbh. Government technical data includes 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-258-3485 |
| Primary Part Number | 2082-4218-01 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Semic Rf Electronic Gmbh |
| Status | ACTIVE |
| Frequency Range | 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Attenuation Accuracy Reference Frequency | 0.0 HERTZ |
| Overall Diameter | 0.312 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.15 AND 1.20 AND 1.25 AND 1.35 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 1.0 |
| Attenuation Accuracy in Decibels | -0.20 TO 0.20 |
| Surface Treatment | PASSIVATE TERMINAL |
| Surface Treatment | PASSIVATE BODY |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Material | STEEL BODY |
| Material | STEEL TERMINAL |
| Temperature Sensitivity Attenuation in Decibels | 0.0006 |
| Power Rating | 2.0 WATTS AVERAGE AND 0.5 KILOWATTS PEAK |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | SMA |
| 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 |
|---|---|
| 2082-4218-01 | Semic Rf Electronic Gmbh (DEU) |
| ATT-0290-01-012-02 | Cinch Connectivity Solutions Inc (USA) |
| Reference | Meaning |
|---|---|
| 2082-4218-01 | 5/9 Secondary reference U.S. Government activity |
| 2901DB | 5/9 Secondary reference Cinch Connectivity Solutions Inc |
| 202775-011 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-258-3485 is a Attenuator,fixed, manufactured by Semic Rf Electronic Gmbh, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-258-3485 has 2 manufacturer part numbers on file: 2082-4218-01 (Semic Rf Electronic Gmbh), ATT-0290-01-012-02 (Cinch Connectivity Solutions Inc).
Key specifications for 2082-4218-01: Frequency Range: 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Attenuation Accuracy Reference Frequency: 0.0 HERTZ; Overall Diameter: 0.312 INCHES NOMINAL IN. 21 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 5985-01-258-3485 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.