The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-822-9772, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-822-9772 |
| Primary Part Number | 77C708673-1 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Mounting Method | TERMINAL SINGLE GROUP |
| Body Width | 0.780 INCHES NOMINAL IN |
| Body Height | 0.700 INCHES NOMINAL IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 125.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Impedance Rating in Ohms | 600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Body Length | 0.910 INCHES NOMINAL IN |
| Winding Operating Current | 15.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Current | 5.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 1.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 7 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 |
|---|---|
| HY2995 | Hytronics Corp. (USA) |
| 41937 | Coast/advanced Chip Magnetics, Inc. (USA) |
| 77C708673-1 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 77C708673P1 | Lockheed Martin Corporation Div Rms (USA) |
| C13648 | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| 77C708673P001 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 3-18053-0000 | 5/9 Secondary reference Cummins Power Generation Inc. |
| 9T31Y3226 | 5/9 Secondary reference General Electric Co Specialty Transformer Dept |
| 3-18053 | C/1 Advisory reference — outside the item-of-supply concept Te Connectivity Networks, Inc. Div Adc Telecommunications Sales, Inc. |
NSN 5950-00-822-9772 is a Transformer,audio Frequency, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-822-9772 has 6 manufacturer part numbers on file: HY2995 (Hytronics Corp.), 41937 (Coast/advanced Chip Magnetics, Inc.), 77C708673-1 (Lockheed Martin Corporation Div Rms), 77C708673P1 (Lockheed Martin Corporation Div Rms), C13648 (Electronic Transformer Corp Div Electronic Transformer Corporation) and 1 more.
2 possible matches (shared part number, not a government interchangeability claim): 5915-00-991-4490, 5905-01-425-8423. Verify interchangeability with system specifications before substitution.
Key specifications for 77C708673-1: Inclosure Type: FULLY INCLOSED; Mounting Method: TERMINAL SINGLE GROUP; Body Width: 0.780 INCHES NOMINAL IN; Body Height: 0.700 INCHES NOMINAL IN. 13 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.