The Reactor, cataloged under National Stock Number 5950-01-127-4237, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is B.c. Systems Inc. Dba Bc Systems Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-127-4237 |
| Primary Part Number | 321-125 |
| Item Name | Reactor |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | B.c. Systems Inc. Dba Bc Systems Inc |
| Status | ACTIVE |
| Inclosure Type | OPEN |
| Inductance Rating | 0.34 MILLIHENRIES NOMINAL SINGLE COMPONENT FIRST WINDING |
| Inductance Rating | 0.95 MILLIHENRIES NOMINAL SINGLE COMPONENT FOURTH WINDING |
| Inductance Rating | 0.95 MILLIHENRIES NOMINAL SINGLE COMPONENT SECOND WINDING |
| Inductance Rating | 0.95 MILLIHENRIES NOMINAL SINGLE COMPONENT THIRD WINDING |
| Inductance Rating | 19.00 MILLIHENRIES NOMINAL SINGLE COMPONENT FIFTH WINDING |
| Winding Conductor Size | 0.02535 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT ALL WINDING IN |
| Winding Operating Current | 1.0 AMPERES DC MAXIMUM SINGLE COMPONENT SECOND WINDING |
| Winding Operating Current | 1.0 AMPERES DC MAXIMUM SINGLE COMPONENT THIRD WINDING |
| Winding Operating Current | 2.0 AMPERES DC MAXIMUM SINGLE COMPONENT FIRST WINDING |
| Winding Operating Current | 40.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIFTH WINDING |
| Winding Operating Current | 40.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FOURTH WINDING |
| DC Resistance Rating in Ohms | 0.200 SINGLE COMPONENT FIRST WINDING |
| DC Resistance Rating in Ohms | 0.400 SINGLE COMPONENT SECOND WINDING |
| DC Resistance Rating in Ohms | 0.400 SINGLE COMPONENT THIRD WINDING |
| DC Resistance Rating in Ohms | 2.000 SINGLE COMPONENT FOURTH WINDING |
| DC Resistance Rating in Ohms | 5.000 SINGLE COMPONENT FIFTH WINDING |
| Winding Quantity | 5 SINGLE COMPONENT |
| Terminal Type and Quantity | 10 WIRE LEAD |
| Inductance Type | FIXED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5950-01-127-4237 is a Reactor, manufactured by B.c. Systems Inc. Dba Bc Systems Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-127-4237 has 2 manufacturer part numbers on file: C11686 (Electronic Transformer Corp Div Electronic Transformer Corporation), 321-125 (B.c. Systems Inc. Dba Bc Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-274-4659. Verify interchangeability with system specifications before substitution.
Key specifications for 321-125: Overall Height: 1.100 INCHES MAXIMUM IN; Inclosure Type: OPEN; Inductance Rating: 0.34 MILLIHENRIES NOMINAL SINGLE COMPONENT FIRST WINDING; Inductance Rating: 0.95 MILLIHENRIES NOMINAL SINGLE COMPONENT FOURTH WINDING. 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.
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.