PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3631Transformer,power

Gulow Electronics Inc · NSN 5950-00-647-7551 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-647-7551 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-647-7551. Primary manufacturer part number: 3631.
Features
  • Transformer,power — FSC 5950
  • Terminal Type and Quantity: 6 TAB, SOLDER LUG
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Winding Operating Voltage: 50.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Winding Operating Voltage: 110.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Body Width: 1.750 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-647-7551, 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 Gulow Electronics Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-647-7551
Primary Part Number3631
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGulow Electronics Inc
StatusACTIVE
Terminal Type and Quantity6 TAB, SOLDER LUG
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage50.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage110.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Body Width1.750 INCHES NOMINAL IN
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length1.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height2.375 INCHES NOMINAL IN
Winding Operating Voltage110.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current500.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width1.406 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Reliability IndicatorNOT ESTABLISHED
Body Length2.000 INCHES NOMINAL IN
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP IN
Inclosure TypeFULLY INCLOSED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1730-00-240-84963631 INTERCHANGEABLE
Sling,aircraft Maintenance
Allison Transmission Inc Dba Allison Transmission, Inc
5985-00-311-90593631 INTERCHANGEABLE
Dummy Load,electrical
Microwave Devices Inc
5120-00-439-8276 INTERCHANGEABLE
Bit,screwdriver
2540-00-709-9712 INTERCHANGEABLE
Shaft
5825-00-901-25393631 INTERCHANGEABLE
Input Processor
The Bechdon Company, Llc
5950-00-910-92426140050-3 INTERCHANGEABLE
Transformer,radio Frequency
Viking Technologies, Ltd.
6680-00-964-9320363-1AND363-2 INTERCHANGEABLE
Indicator Set,liquid Quantity
Transicoil Llc Dba Ads Transicoil Div Transicoil
5305-01-089-60043631 INTERCHANGEABLE
Setscrew
Kearflex Engineering Company
5935-01-096-43293631 INTERCHANGEABLE
Jack
Crown Audio, Inc. Dba Crown International
6105-01-256-4607010526 INTERCHANGEABLE
Motor,direct Current
Badger Truck and Automotive Group, Inc.
Cross-Reference Index
Part NumberManufacturer
3631 Gulow Electronics Inc (USA)
884561 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
1730-00-240-8496INTERCHANGEABLE
SLING,AIRCRAFT MAINTENANCE
3631
5985-00-311-9059INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
3631
5120-00-439-8276INTERCHANGEABLE
BIT,SCREWDRIVER
2540-00-709-9712INTERCHANGEABLE
SHAFT
5825-00-901-2539INTERCHANGEABLE
INPUT PROCESSOR
3631
5950-00-910-9242INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6140050-3
6680-00-964-9320INTERCHANGEABLE
INDICATOR SET,LIQUID QUANTITY
363-1AND363-2
5305-01-089-6004INTERCHANGEABLE
SETSCREW
3631
5935-01-096-4329INTERCHANGEABLE
JACK
3631
6105-01-256-4607INTERCHANGEABLE
MOTOR,DIRECT CURRENT
010526
6520-01-315-4631INTERCHANGEABLE
REFERENCE PIN BLOCK,CASTING MACH
6640-01-553-5006INTERCHANGEABLE
PIPETTER
PIP-300UL-1STOP-M

Frequently Asked Questions

What is NSN 5950-00-647-7551?

NSN 5950-00-647-7551 is a Transformer,power, manufactured by Gulow Electronics Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-647-7551?

NSN 5950-00-647-7551 has 2 cross-referenced part numbers: 3631 (Gulow Electronics Inc), 884561 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5950-00-647-7551?

There are 12 known substitutes for 5950-00-647-7551: 1730-00-240-8496, 5985-00-311-9059, 5120-00-439-8276 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3631?

Key specifications for 3631: Terminal Type and Quantity: 6 TAB, SOLDER LUG; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT; Winding Operating Voltage: 50.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY. 18 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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