The Attenuator,fixed, cataloged under National Stock Number 5985-01-326-6977, 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 Keysight Technologies Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-326-6977 |
| Primary Part Number | 0955-0311 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIP. |
| Frequency Range | 0.000 HERTZ MINIMUM AND 1.500 GIGAHERTZ MAXIMUM |
| Center to Center Distance Between Second and Third Terminals | 0.125 INCHES NOMINAL IN |
| Body Style | RECTANGULAR, TERMINAL/TERMINALS ON ONE SURFACE |
| Attenuation Accuracy Reference Frequency | 1.5 GIGAHERTZ |
| Voltage Standing Wave Ratio | 1.50 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | PLUG-IN |
| Rf Signal Attenuation in Decibels | 4.0 |
| Body Height | 0.255 INCHES NOMINAL IN |
| Attenuation Accuracy in Decibels | -0.20 TO 0.20 |
| Center to Center Distance Between First and Second Terminals | 0.125 INCHES NOMINAL IN |
| Operating Temp Range | -55.0 TO 100.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 1.5 GIGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Power Rating | 500.0 MILLIWATTS AVERAGE |
| Terminal Type and Quantity | 8 PIN |
| Output Impedance Rating in Ohms | 50.0 |
| Center to Center Distance Between Third and Fourth Terminals | 0.125 INCHES NOMINAL IN |
| 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 |
|---|---|
| 0955-0311 | Keysight Technologies Inc (USA) |
| MAT-4 | Scientific Components Corp Dba Mini-Circuits (USA) |
| Reference | Meaning |
|---|---|
| 0955-0311 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 0955-0311 | 5/9 Secondary reference Keysight Technologies, Inc. |
| 121-268-0002 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-326-6977 is a Attenuator,fixed, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-326-6977 has 2 manufacturer part numbers on file: 0955-0311 (Keysight Technologies Inc), MAT-4 (Scientific Components Corp Dba Mini-Circuits).
Key specifications for 0955-0311: Overall Height: 0.380 INCHES NOMINAL IN; FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIP.; Frequency Range: 0.000 HERTZ MINIMUM AND 1.500 GIGAHERTZ MAXIMUM; Center to Center Distance Between Second and Third Terminals: 0.125 INCHES NOMINAL IN. 19 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.