The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-199-3635, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lucent Technologies Inc Corporate Headquarters. Government technical data includes 15 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-199-3635 |
| Primary Part Number | ES678921-2 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Lucent Technologies Inc Corporate Headquarters |
| Status | ACTIVE |
| Transformer Function | INTERSTAGE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Adjustment Device Drive Type | SLOTTED SCREW SINGLE COMPONENT |
| Body Width | 2.010 INCHES NOMINAL IN |
| Body Height | 1.448 INCHES NOMINAL IN |
| Adjustment Method and Quantity | 2 ADJUSTABLE CORE SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 3.750 INCHES NOMINAL IN |
| Frequency Rating | 2.65 MEGAHERTZ MAXIMUM SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 8 TAB, SOLDER LUG |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| 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 |
|---|---|
| ES678921-2 PRIMARY | Lucent Technologies Inc Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| 680249-2 | 5/9 Secondary reference At and T Corp |
| ES680249-2 | 5/9 Secondary reference At and T Corp |
| 680249-2 | 5/9 Secondary reference American Telephone and Telegraph Co |
| ES678921-2 | 3/9 Design control — primary reference American Telephone and Telegraph Co |
| ESL680249-2 | 5/9 Secondary reference At and T Corp |
| ES678921-2 | 5/9 Secondary reference At and T Corp |
| ES680249-2 | 5/9 Secondary reference American Telephone and Telegraph Co |
| ESL680249-2 | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 5950-00-199-3635 is a Transformer,radio Frequency, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-199-3635 has 1 manufacturer part number on file: ES678921-2 (Lucent Technologies Inc Corporate Headquarters).
Key specifications for ES678921-2: Transformer Function: INTERSTAGE; Mounting Facility Quantity: 2 SINGLE GROUP; Mounting Method: THREADED STUD(S) SINGLE GROUP; Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT. 15 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.