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PartsTable / COMPONENT / 28704ISSUEB
28704ISSUEB ✓ 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: 4.250 INCHES MINIMUM AND 4.313 INCHES MAXIMUM IN, body_height: 3.625 INCHES MINIMUM AND 3.688 INCHES MAXIMUM IN, body_length: 4.437 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED, mounting_method: THREADED HOLE(S) SINGLE GROUPUNABLE TO DECODE, nominal_thread_size: 0.190 INCHES SINGLE GROUPUNABLE TO DECODE 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 5950-00-688-5851, 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
28704ISSUEB
NSN: 5950-00-688-5851
FSC: 5950
CAGE: 42498 — DAR ELECTRONICS INC DBA NATIONAL RADIO CO (USA)
SPECIFICATIONS
body_width4.250 INCHES MINIMUM AND 4.313 INCHES MAXIMUM IN
body_height3.625 INCHES MINIMUM AND 3.688 INCHES MAXIMUM IN
body_length4.437 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN
inclosure_typeHERMETICALLY SEALED
mounting_methodTHREADED HOLE(S) SINGLE GROUPUNABLE TO DECODE
nominal_thread_size0.190 INCHES SINGLE GROUPUNABLE TO DECODE IN
winding_power_ratingUNABLE TO DECODE31.5 VOLTS-AMPERES SINGLE COMPONENT FOURTH SECONDARY
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp105.0 CELSIUS DEGC
thread_series_designatorUNF SINGLE GROUP
winding_shielding_methodINTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENTUNABLE TO DECODE
winding_operating_currentUNABLE TO DECODE5.0 AMPERES AC NOMINAL SINGLE COMPONENT FOURTH SECONDARY
NSN5950-00-688-5851
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER TITLE COMPONENT PN 28704ISSUEB MFR TRANSFORMER,POWER
KEY FEATURES
•
BODY WIDTH: 4.250 INCHES MINIMUM AND 4.313 INCHES MAXIMUM IN
•
WINDING OPERATING CURRENT: UNABLE TO DECODE5.0 AMPERES AC NOMINAL SINGLE COMPONENT FOURTH SECONDARY
•
WINDING POWER RATING: UNABLE TO DECODE56.6 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY
•
MOUNTING METHOD: THREADED HOLE(S) SINGLE GROUPUNABLE TO DECODE
•
WINDING SHIELDING METHOD: INTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENTUNABLE TO DECODE
•
NOMINAL THREAD SIZE: 0.190 INCHES SINGLE GROUPUNABLE TO DECODE IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY WIDTH4.250 INCHES MINIMUM AND 4.313 INCHES MAXIMUM IN
WINDING OPERATING CURRENTUNABLE TO DECODE5.0 AMPERES AC NOMINAL SINGLE COMPONENT FOURTH SECONDARY
WINDING POWER RATINGUNABLE TO DECODE56.6 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY
WINDING POWER RATINGUNABLE TO DECODE31.5 VOLTS-AMPERES SINGLE COMPONENT FOURTH SECONDARY
MOUNTING METHODTHREADED HOLE(S) SINGLE GROUPUNABLE TO DECODE
WINDING POWER RATINGUNABLE TO DECODE46.5 VOLTS-AMPERES SINGLE COMPONENT THIRD SECONDARY
WINDING SHIELDING METHODINTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENTUNABLE TO DECODE
NOMINAL THREAD SIZE0.190 INCHES SINGLE GROUPUNABLE TO DECODE IN
WINDING POWER RATINGUNABLE TO DECODE7.98 VOLTS-AMPERES SINGLE COMPONENT SECOND SECONDARY
RELIABILITY INDICATORNOT ESTABLISHED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
MKF19AInterchangeable
interchangeable cross-reference
interchangeable
28704Interchangeable
interchangeable cross-reference
interchangeable
18639Interchangeable
interchangeable cross-reference
interchangeable
QD614Interchangeable
interchangeable cross-reference
interchangeable
36111Interchangeable
interchangeable cross-reference
interchangeable
A28704Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28704ISSUEB?
28704ISSUEB is a TRANSFORMER,POWER.
What parts can replace 28704ISSUEB?
There are 6 known substitutes for 28704ISSUEB: MKF19A, 28704, 18639 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28704ISSUEB?
28704ISSUEB is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-688-5851. 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