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PartsTable / COMPONENT / 2281978
2281978 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

TRANSFORMER,POWER AUTOTRANSFORME. Key specifications include body_length: 1.810 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, mounting_method: THREADED BUSHING SINGLE GROUP, frequency_rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT, nominal_thread_size: 0.375 INCHES SINGLE GROUP IN, body_outside_diameter: 2.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-950-4441, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2281978
NSN: 5950-00-950-4441
FSC: 5950
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
body_length1.810 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
mounting_methodTHREADED BUSHING SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
nominal_thread_size0.375 INCHES SINGLE GROUP IN
body_outside_diameter2.000 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_operating_current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
winding_operating_voltage0.00 AC VOLTS MINIMUM AND 28.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
terminal_type_and_quantity3 THREADED STUD
winding_function_and_quantity1 PRIMARY, VARIABLE AUTOTRANSFORMER TYPE SINGLE COMPONENT
NSN5950-00-950-4441
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER AUTOTRANSFORME TITLE COMPONENT PN 2281978 MFR TRANSFORMER,POWER AUTO
KEY FEATURES
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
INPUT-OUTPUT PHASE RELATIONSHIP: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
•
TERMINAL TYPE AND QUANTITY: 3 THREADED STUD
•
BODY LENGTH: 1.810 INCHES NOMINAL IN
•
WINDING OPERATING VOLTAGE: 28.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
•
NOMINAL THREAD SIZE: 0.375 INCHES SINGLE GROUP IN
•
MOUNTING METHOD: THREADED BUSHING SINGLE GROUP
•
BODY OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
RELIABILITY INDICATORNOT ESTABLISHED
INPUT-OUTPUT PHASE RELATIONSHIPSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
TERMINAL TYPE AND QUANTITY3 THREADED STUD
BODY LENGTH1.810 INCHES NOMINAL IN
WINDING OPERATING VOLTAGE28.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
NOMINAL THREAD SIZE0.375 INCHES SINGLE GROUP IN
MOUNTING METHODTHREADED BUSHING SINGLE GROUP
BODY OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
WINDING OPERATING VOLTAGE0.00 AC VOLTS MINIMUM AND 28.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
239Interchangeable
interchangeable cross-reference
interchangeable
100-245Interchangeable
interchangeable cross-reference
interchangeable
CM239Interchangeable
interchangeable cross-reference
interchangeable
51253Interchangeable
interchangeable cross-reference
interchangeable
CB-I16Interchangeable
interchangeable cross-reference
interchangeable
TCR-109-MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2281978?
2281978 is a TRANSFORMER,POWER AUTOTRANSFORME.
What parts can replace 2281978?
There are 10 known substitutes for 2281978: 239, 100-245, CM239 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2281978?
2281978 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-950-4441. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026