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38Z257 ✓ 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

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include body_width: 1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN, body_height: 2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN, body_length: 2.562 INCHES MINIMUM AND 2.688 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED, mounting_method: THREADED STUD(S) SINGLE GROUP, frequency_rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-169-8318, 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
38Z257
NSN: 5950-00-169-8318
FSC: 5950
CAGE: 21811 — DEK INDUSTRIES INC DIV OF TECHNOLOGY RESEARCH INC (USA)
SPECIFICATIONS
body_width1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
body_height2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
body_length2.562 INCHES MINIMUM AND 2.688 INCHES MAXIMUM IN
inclosure_typeHERMETICALLY SEALED
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp85.0 CELSIUS DEGC
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_operating_current1.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
winding_operating_voltage25.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
NSN5950-00-169-8318
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER TITLE COMPONENT PN 38Z257 MFR TRANSFORMER,POWER
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP
•
MAXIMUM OPERATING TEMP: 85.0 CELSIUS DEGC
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
MAXIMUM TRANSFORMER POWER RATING: 25.0 VOLT-AMPERE SINGLE COMPONENT
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
BODY HEIGHT: 2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
INPUT-OUTPUT PHASE RELATIONSHIP: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY QUANTITY4 SINGLE GROUP
MAXIMUM OPERATING TEMP85.0 CELSIUS DEGC
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
MAXIMUM TRANSFORMER POWER RATING25.0 VOLT-AMPERE SINGLE COMPONENT
RELIABILITY INDICATORNOT ESTABLISHED
BODY HEIGHT2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
INPUT-OUTPUT PHASE RELATIONSHIPSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
INCLOSURE TYPEHERMETICALLY SEALED
WINDING FUNCTION AND QUANTITY1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
ROM/PROM FAMILY 237Interchangeable
interchangeable cross-reference
interchangeable
CC8413-409FInterchangeable
interchangeable cross-reference
interchangeable
82S130/BEAInterchangeable
interchangeable cross-reference
interchangeable
5062-7015Interchangeable
interchangeable cross-reference
interchangeable
2043AS423-01Interchangeable
interchangeable cross-reference
interchangeable
10138491Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 38Z257?
38Z257 is a TRANSFORMER,POWER.
What parts can replace 38Z257?
There are 10 known substitutes for 38Z257: ROM/PROM FAMILY 237, CC8413-409F, 82S130/BEA and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 38Z257?
38Z257 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-169-8318. 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