The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-148-1399, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-148-1399 |
| Primary Part Number | 666230-331 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Overall Diameter | 0.417 INCHES MINIMUM AND 0.427 INCHES MAXIMUM IN |
| Mounting Method | TAB SINGLE GROUP |
| Adjustment Device Drive Type | SLOTTED SCREW SINGLE COMPONENT |
| Adjustment Method and Quantity | 1 ADJUSTABLE CORE SINGLE COMPONENT |
| Coil Form Type | HOLLOW SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY, VARIABLE AUTOTRANSFORMER TYPE SINGLE COMPONENT |
| Body Length | 0.490 INCHES MAXIMUM IN |
| Reliability Indicator | NOT ESTABLISHED |
| Mounting Tab Width | 0.023 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN |
| Frequency Rating | 19.0 MEGAHERTZ NOMINAL SINGLE COMPONENT |
| Terminal Type and Quantity | 4 PIN |
| 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 |
|---|---|
| 666230-331 PRIMARY | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA) |
| 809000-271 | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA) |
| 1642-31 | American Trans-Coil Corp (USA) |
| Reference | Meaning |
|---|---|
| 666230-331 | 5/9 Secondary reference Radionics Technologies Inc |
| 666230-331 | 5/9 Secondary reference Morley Transformer Co Inc |
NSN 5950-00-148-1399 is a Transformer,radio Frequency, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-148-1399 has 3 manufacturer part numbers on file: 666230-331 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc), 809000-271 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc), 1642-31 (American Trans-Coil Corp).
2 possible matches (shared part number, not a government interchangeability claim): 5315-00-166-3564, 3020-00-359-8066. Verify interchangeability with system specifications before substitution.
Key specifications for 666230-331: Inclosure Type: FULLY INCLOSED; Overall Diameter: 0.417 INCHES MINIMUM AND 0.427 INCHES MAXIMUM IN; Mounting Method: TAB SINGLE GROUP; Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT. 12 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.