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T501U ✓ 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 overall_width: 6.125 INCHES NOMINAL IN, inclosure_type: OPEN, overall_length: 6.812 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 50.0 HERTZ NOMINAL AND 60.0 HERTZ NOMINAL SINGLE COMPONENT, winding_power_rating: 2.1 KILOVOLT-AMPERES SINGLE COMPONENT SINGLE PRIMARY OUTPUT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-681-6862, 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
T501U
NSN: 5950-00-681-6862
FSC: 5950
CAGE: 83008 — STACO ENERGY PRODUCTS CO DBA STACO ENERGY PRODUCTS CO (USA)
SPECIFICATIONS
overall_width6.125 INCHES NOMINAL IN
inclosure_typeOPEN
overall_length6.812 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S) SINGLE GROUP
frequency_rating50.0 HERTZ NOMINAL AND 60.0 HERTZ NOMINAL SINGLE COMPONENT
winding_power_rating2.1 KILOVOLT-AMPERES SINGLE COMPONENT SINGLE PRIMARY OUTPUT
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter0.312 INCHES NOMINAL SINGLE GROUP IN
winding_operating_current15.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
winding_operating_voltage0.00 AC VOLTS MINIMUM AND 140.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
mounting_facility_quantity4 SINGLE GROUP
terminal_type_and_quantity5 TAB, SOLDER LUG
NSN5950-00-681-6862
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER AUTOTRANSFORME TITLE COMPONENT PN T501U MFR TRANSFORMER,POWER AUTO
KEY FEATURES
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 4.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH: 4.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
FREQUENCY RATING: 50.0 HERTZ NOMINAL AND 60.0 HERTZ NOMINAL SINGLE COMPONENT
•
WINDING FUNCTION AND QUANTITY: 1 PRIMARY, VARIABLE AUTOTRANSFORMER TYPE SINGLE COMPONENT
•
MOUNTING METHOD: UNTHREADED HOLE(S) SINGLE GROUP
•
MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP
•
WINDING POWER RATING: 2.1 KILOVOLT-AMPERES SINGLE COMPONENT SINGLE PRIMARY OUTPUT
TECHNICAL CHARACTERISTICS (FLIS)
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH4.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH4.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
FREQUENCY RATING50.0 HERTZ NOMINAL AND 60.0 HERTZ NOMINAL SINGLE COMPONENT
WINDING FUNCTION AND QUANTITY1 PRIMARY, VARIABLE AUTOTRANSFORMER TYPE SINGLE COMPONENT
OVERALL WIDTH6.125 INCHES NOMINAL IN
MOUNTING METHODUNTHREADED HOLE(S) SINGLE GROUP
MOUNTING FACILITY QUANTITY4 SINGLE GROUP
WINDING POWER RATING2.1 KILOVOLT-AMPERES SINGLE COMPONENT SINGLE PRIMARY OUTPUT
ADJUSTMENT METHOD AND QUANTITY1 ADJUSTABLE CONTROL SINGLE COMPONENT
ADJUSTMENT DEVICE DRIVE TYPESHAFT SINGLE COMPONENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
559-1561-042Interchangeable
interchangeable cross-reference
interchangeable
2495500-42Interchangeable
interchangeable cross-reference
interchangeable
JANRCR07G511JSInterchangeable
interchangeable cross-reference
interchangeable
MILC11097Interchangeable
interchangeable cross-reference
interchangeable
AT630BANDAT10003Interchangeable
interchangeable cross-reference
interchangeable
W50AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T501U?
T501U is a TRANSFORMER,POWER AUTOTRANSFORME.
What parts can replace T501U?
There are 8 known substitutes for T501U: 559-1561-042, 2495500-42, JANRCR07G511JS and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T501U?
T501U is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-681-6862. 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