The Transformer Assembly, cataloged under National Stock Number 5950-00-155-4739, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-155-4739 |
| Primary Part Number | 247AS-C1956-001 |
| Item Name | Transformer Assembly |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE ALL COMPONENTS |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SECOND COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY FIRST COMPONENT |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Winding Operating Current | 250.0 MILLIAMPERES AC MAXIMUM ALL COMPONENTS SINGLE SECONDARY |
| Rating Method | ELECTRICAL ALL COMPONENTS SINGLE SECONDARY |
| Rating Method | ELECTRICAL ALL COMPONENTS SINGLE PRIMARY |
| DC Resistance Rating in Ohms | 21.000 FIRST COMPONENT SINGLE PRIMARY |
| DC Resistance Rating in Ohms | 21.000 SECOND COMPONENT SINGLE PRIMARY |
| DC Resistance Rating in Ohms | 21.400 FIRST COMPONENT SINGLE SECONDARY |
| DC Resistance Rating in Ohms | 21.500 SECOND COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Cubic Measure | 14.4 CUBIC INCHES |
| Frequency Rating | 5.0 KILOHERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM ALL COMPONENTS |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.812 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 125.00 AC VOLTS NOMINAL ALL COMPONENTS SINGLE PRIMARY |
| Terminal Type and Quantity | 12 TAB, SOLDER LUG |
| Thread Series Designator | UN 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 |
|---|---|
| 101-3877-1 | Behlman Electronics, Inc (USA) |
| 247AS-C1956-001 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5950-00-155-4739 is a Transformer Assembly, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-155-4739 has 2 manufacturer part numbers on file: 101-3877-1 (Behlman Electronics, Inc), 247AS-C1956-001 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-324-2353. Verify interchangeability with system specifications before substitution.
Key specifications for 247AS-C1956-001: Overall Height: 4.875 INCHES NOMINAL IN; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 22 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.