The Transformer,power, cataloged under National Stock Number 5950-01-013-2479, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Espey Mfg and Electronics Corp. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-013-2479 |
| Primary Part Number | SI-143-P |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Espey Mfg and Electronics Corp |
| Status | ACTIVE |
| Inclosure Type | HERMETICALLY SEALED |
| Body Width | 3.375 INCHES NOMINAL IN |
| Body Height | 4.313 INCHES NOMINAL IN |
| Body Length | 3.938 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Terminal Type and Quantity | 10 TAB, SOLDER LUG |
| 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 |
|---|---|
| SI-143-P PRIMARY | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| SI-143-P | 3/9 Design control — primary reference U.S. Government activity |
NSN 5950-01-013-2479 is a Transformer,power, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-013-2479 has 1 manufacturer part number on file: SI-143-P (Espey Mfg and Electronics Corp).
Key specifications for SI-143-P: Inclosure Type: HERMETICALLY SEALED; Body Width: 3.375 INCHES NOMINAL IN; Body Height: 4.313 INCHES NOMINAL IN; Body Length: 3.938 INCHES NOMINAL IN. 6 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.