The Bolometer,radio Frequency, cataloged under National Stock Number 6625-00-031-1003, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Keysight Technologies Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-031-1003 |
| Primary Part Number | 618B28 |
| Item Name | Bolometer,radio Frequency |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Sensing Element Type | THERMISTOR |
| Battery Case | NOT PROVIDED |
| Frequency Range Rating | +3.5 TO 7.8 GIGAHERTZ |
| Inductive Pickup Loop Type | FIXED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | X |
| Weight | 0.7500 lbs |
| Cube | 0.0380 cu ft |
| Part Number | Manufacturer |
|---|---|
| 618B28 PRIMARY | Keysight Technologies Inc (USA) |
| 618BS115 | Keysight Technologies Inc (USA) |
| 618B28N | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 618B28 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 618B28N | 5/9 Secondary reference Keysight Technologies, Inc. |
| 618B28N | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 618BS115 | 5/9 Secondary reference Keysight Technologies, Inc. |
| 618BS115 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 618B28 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
NSN 6625-00-031-1003 is a Bolometer,radio Frequency, manufactured by Keysight Technologies Inc, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-00-031-1003 has 3 manufacturer part numbers on file: 618B28 (Keysight Technologies Inc), 618BS115 (Keysight Technologies Inc), 618B28N (Keysight Technologies Inc).
Key specifications for 618B28: Sensing Element Type: THERMISTOR; Overall Height: 0.781 INCHES NOMINAL IN; Overall Length: 3.500 INCHES NOMINAL IN; Overall Width: 0.750 INCHES NOMINAL IN. 4 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.