PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56-12Transformer,power

Signal Transformer Co Inc · NSN 5950-00-098-9139 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-098-9139 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-098-9139. Primary manufacturer part number: 56-12.
Features
  • Transformer,power — FSC 5950
  • Inclosure Type: OPEN
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Voltage: 105.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL AND 125.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 3.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 500.0 HERTZ MAXIMUM SINGLE COMPONENT
  • Mounting Slot Width: 0.262 INCHES NOMINAL SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-098-9139, 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 Signal Transformer Co Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5950-00-098-9139
Primary Part Number56-12
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerSignal Transformer Co Inc
StatusACTIVE
Inclosure TypeOPEN
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage105.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL AND 125.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width3.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating50.0 HERTZ MINIMUM AND 500.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting Slot Width0.262 INCHES NOMINAL SINGLE GROUP IN
Winding Operating Current24.0 AMPERES AC NOMINAL SINGLE COMPONENT ALL SECONDARY
Terminal Type and Quantity10 TAB, SOLDER LUG
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length5.313 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Winding Operating Voltage28.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-156-7938 INTERCHANGEABLE
Bearing,ball,annular
5330-00-166-5700RA1909 INTERCHANGEABLE
Gasket
Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec
1680-00-476-2356 INTERCHANGEABLE
Lever,remote Control
2090-00-809-406356-12 INTERCHANGEABLE
Blade,windshield Wiper
Cornell-Carr Co., Inc.
5310-00-846-3363WA15810 INTERCHANGEABLE
Washer,flat
Lct Electronics
6120-01-016-1487 INTERCHANGEABLE
Power Supply
5961-01-023-2853NTE5612 INTERCHANGEABLE
Semiconductor Device,thyristor
Nte Electronics, Inc
6145-01-137-97405612 INTERCHANGEABLE
Cable,special Purpose,electrical
Mercury Wire Products, Inc. Dba Mercury Wire Products Inc
5330-01-180-27695612 INTERCHANGEABLE
Gasket
Eaton Corporation Div Fed
5310-01-238-71175612 INTERCHANGEABLE
Washer
Woodhead, Lp Dba Woodhead Div Integrated Products Group
Cross-Reference Index
Part NumberManufacturer
56-12 Signal Transformer Co Inc (USA)
Related Parts
3110-00-156-7938INTERCHANGEABLE
BEARING,BALL,ANNULAR
5330-00-166-5700INTERCHANGEABLE
GASKET
RA1909
1680-00-476-2356INTERCHANGEABLE
LEVER,REMOTE CONTROL
2090-00-809-4063INTERCHANGEABLE
BLADE,WINDSHIELD WIPER
56-12
5310-00-846-3363INTERCHANGEABLE
WASHER,FLAT
WA15810
6120-01-016-1487INTERCHANGEABLE
POWER SUPPLY
5961-01-023-2853INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
NTE5612
6145-01-137-9740INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
5612
5330-01-180-2769INTERCHANGEABLE
GASKET
5612
5310-01-238-7117INTERCHANGEABLE
WASHER
5612
4730-01-298-5296INTERCHANGEABLE
CLAMP,HOSE
5612
5315-01-417-7766INTERCHANGEABLE
PIN,GROOVED,HEADLESS

Frequently Asked Questions

What is NSN 5950-00-098-9139?

NSN 5950-00-098-9139 is a Transformer,power, manufactured by Signal Transformer Co Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-098-9139?

NSN 5950-00-098-9139 has 1 cross-referenced part number: 56-12 (Signal Transformer Co Inc).

What NSN replaces 5950-00-098-9139?

There are 12 known substitutes for 5950-00-098-9139: 3110-00-156-7938, 5330-00-166-5700, 1680-00-476-2356 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56-12?

Key specifications for 56-12: Overall Height: 5.312 INCHES NOMINAL IN; Inclosure Type: OPEN; Reliability Indicator: NOT ESTABLISHED; Winding Operating Voltage: 105.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL AND 125.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY. 17 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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