PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B4040025Transformer,current

Department of the Army Hq United States Army Communications Research and Development Command · NSN 5950-01-238-1553 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-238-1553 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-238-1553. Primary manufacturer part number: B4040025.
Features
  • Transformer,current — FSC 5950
  • Winding Operating Current: 1.0 AMPERES AC NOMINAL SINGLE COMPONENT ALL PRIMARY
  • Body Length: 0.750 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 2 WIRE LEAD
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Inclosure Type: OPEN
  • Winding Function and Quantity: 1 SECONDARY SINGLE COMPONENT
  • Mounting Method: TERMINAL SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,current, cataloged under National Stock Number 5950-01-238-1553, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Department of the Army Hq United States Army Communications Research and Development Command. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-238-1553
Primary Part NumberB4040025
Item NameTransformer,current
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerDepartment of the Army Hq United States Army Communications Research and Development Command
StatusACTIVE
Winding Operating Current1.0 AMPERES AC NOMINAL SINGLE COMPONENT ALL PRIMARY
Body Length0.750 INCHES MAXIMUM IN
Terminal Type and Quantity2 WIRE LEAD
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Inclosure TypeOPEN
Winding Function and Quantity1 SECONDARY SINGLE COMPONENT
Mounting MethodTERMINAL SINGLE GROUP
Frequency Rating10.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Body Outside Diameter0.280 INCHES MINIMUM IN
Winding Operating Voltage20.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
8010-00-079-2754 INTERCHANGEABLE
Enamel
5120-00-851-42475120-00-851-4247 INTERCHANGEABLE
Screwdriver Bit Set and Handle
General Services Administration Federal Supply Service
5330-00-884-88661411-2 INTERCHANGEABLE
Seal
Randall Mfg. Co., Inc.
5950-00-902-89532270098-2 INTERCHANGEABLE
Coil,radio Frequency
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6240-01-313-825314-112 INTERCHANGEABLE
Lamp,incandescent
Applied Avionics, Llc Dba Applied Avionics, Inc
6525-01-472-322714-112 INTERCHANGEABLE
Switch,timer
Star X-Ray Co.inc.
5340-01-602-471761957 INTERCHANGEABLE
Stop,mechanical
Aerol Llc
5305-01-625-997714112 INTERCHANGEABLE
Screw,cap,hexagon Head
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
L504001594 Lockheed Martin Librascope Corporation (USA)
B4040025 PRIMARY Department of the Army Hq United States Army Communications Research and Development Command (USA)
14112 Magnespec Inc (USA)
3C390 Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc (USA)
Related Parts
8010-00-079-2754INTERCHANGEABLE
ENAMEL
5120-00-851-4247INTERCHANGEABLE
SCREWDRIVER BIT SET AND HANDLE
5120-00-851-4247
5330-00-884-8866INTERCHANGEABLE
SEAL
1411-2
5950-00-902-8953INTERCHANGEABLE
COIL,RADIO FREQUENCY
2270098-2
6240-01-313-8253INTERCHANGEABLE
LAMP,INCANDESCENT
14-112
6525-01-472-3227INTERCHANGEABLE
SWITCH,TIMER
14-112
5340-01-602-4717INTERCHANGEABLE
STOP,MECHANICAL
61957
5305-01-625-9977INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
14112

Frequently Asked Questions

What is NSN 5950-01-238-1553?

NSN 5950-01-238-1553 is a Transformer,current, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-238-1553?

NSN 5950-01-238-1553 has 4 cross-referenced part numbers: L504001594 (Lockheed Martin Librascope Corporation), B4040025 (Department of the Army Hq United States Army Communications Research and Development Command), 14112 (Magnespec Inc), 3C390 (Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc).

What NSN replaces 5950-01-238-1553?

There are 8 known substitutes for 5950-01-238-1553: 8010-00-079-2754, 5120-00-851-4247, 5330-00-884-8866 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B4040025?

Key specifications for B4040025: Winding Operating Current: 1.0 AMPERES AC NOMINAL SINGLE COMPONENT ALL PRIMARY; Special Features: PRIMARY RATED BUT NOTINCLUDED; Body Length: 0.750 INCHES MAXIMUM IN; Terminal Type and Quantity: 2 WIRE LEAD. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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