The Transformer,power, cataloged under National Stock Number 5950-01-159-5561, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit. Government technical data includes 29 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. 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 | 5950-01-159-5561 |
| Primary Part Number | 21587 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 4.610 INCHES MINIMUM AND 4.630 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Power Rating | 1.25 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY |
| Winding Power Rating | 17.0 VOLTS-AMPERES SINGLE COMPONENT THIRD SECONDARY |
| Winding Power Rating | 340.0 VOLTS-AMPERES SINGLE COMPONENT SECOND SECONDARY |
| Winding Power Rating | 407.0 VOLTS-AMPERES SINGLE COMPONENT FOURTH SECONDARY |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | SLOT SINGLE GROUP |
| Body Width | 5.500 INCHES MINIMUM AND 5.900 INCHES MAXIMUM IN |
| Body Height | 6.700 INCHES MINIMUM AND 7.100 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY AND 6 SECONDARY SINGLE COMPONENT |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Body Length | 6.200 INCHES MINIMUM AND 6.700 INCHES MAXIMUM IN |
| Winding Operating Current | 11.0 AMPERES DC NOMINAL SINGLE COMPONENT FOURTH SECONDARY |
| Winding Operating Current | 250.0 MILLIAMPERES DC MINIMUM AND 5.0 AMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 250.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Current | 50.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 57.0 HERTZ MINIMUM AND 63.0 HERTZ MAXIMUM SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 4.930 INCHES MINIMUM AND 4.950 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 103.00 AC VOLTS MINIMUM AND 127.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 25.00 DC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Voltage | 37.00 DC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY |
| Winding Operating Voltage | 68.00 DC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 68.00 DC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Terminal Type and Quantity | 23 TAB, SOLDER LUG |
| Mounting Slot Width | 0.240 INCHES MINIMUM AND 0.300 INCHES MAXIMUM SINGLE GROUP IN |
| 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 |
|---|---|
| 21587 PRIMARY | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (USA) |
NSN 5950-01-159-5561 is a Transformer,power, manufactured by Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-159-5561 has 1 manufacturer part number on file: 21587 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit).
2 possible matches (shared part number, not a government interchangeability claim): 1650-01-326-9160, 4320-01-459-0054. Verify interchangeability with system specifications before substitution.
Key specifications for 21587: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 4.610 INCHES MINIMUM AND 4.630 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Power Rating: 1.25 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY. 29 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.