The Saturable Reactor, cataloged under National Stock Number 5950-00-652-5436, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Freed Transformer Co. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-652-5436 |
| Primary Part Number | 37580 |
| Item Name | Saturable Reactor |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Freed Transformer Co |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Height | 0.875 INCHES MAXIMUM IN |
| Winding Function and Quantity | 3 SECONDARY AND 1 CONTROL SINGLE COMPONENT |
| Winding Shielding Method | EXTERNAL INCLOSURE SINGLE COMPONENT |
| Nominal Thread Size | 0.112 INCHES SINGLE GROUP IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 90.0 HERTZ MINIMUM SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Thread Quantity Per Inch | 40 SINGLE GROUP |
| Winding Operating Voltage | 2.00 AC VOLTS MINIMUM AND 3.00 AC VOLTS MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 2.00 AC VOLTS MINIMUM AND 3.00 AC VOLTS MAXIMUM SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Voltage | 55.00 DC VOLTS NOMINAL SINGLE COMPONENT SINGLE CONTROL |
| Winding Operating Voltage | 6.00 AC VOLTS MINIMUM AND 7.00 AC VOLTS MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Terminal Type and Quantity | 10 TAB, SOLDER LUG |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 37580 | Freed Transformer Co (USA) |
| Reference | Meaning |
|---|---|
| 674-5012-00 | 3/9 Design control — primary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5950-00-652-5436 is a Saturable Reactor, manufactured by Freed Transformer Co, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-652-5436 has 1 manufacturer part number on file: 37580 (Freed Transformer Co).
4 possible matches (shared part number, not a government interchangeability claim): 5910-00-866-7525, 5330-01-342-2532, 5340-01-357-8172. Verify interchangeability with system specifications before substitution.
Key specifications for 37580: Overall Height: 1.094 INCHES MAXIMUM IN; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 18 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.
NSN 5950-00-652-5436 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.