The Bias Board, cataloged under National Stock Number 1680-01-644-7154, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-644-7154 |
| Primary Part Number | 514195-1 |
| Item Name | Bias Board |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 514195-1 PRIMARY | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (USA) |
| 514195-1 | Triman Industries Inc (USA) |
| 514195-1 PRIMARY | General Atomics Dba General Atomics Corp (USA) |
| Reference | Meaning |
|---|---|
| 840-1014-09 (REI 25-22066) | 5/9 Secondary reference Triman Industries Inc |
| 514195-1 | 5/9 Secondary reference Kato Engineering Inc. |
NSN 1680-01-644-7154 is a Bias Board, manufactured by Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-644-7154 has 3 manufacturer part numbers on file: 514195-1 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit), 514195-1 (Triman Industries Inc), 514195-1 (General Atomics Dba General Atomics Corp).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1680-01-644-7154 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.