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Technical Data Sheet
PartsTable / COMPONENT / 3B90031-105
3B90031-105 ✓ 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_width: 1.700 INCHES MAXIMUM IN, body_height: 2.650 INCHES MAXIMUM IN, body_length: 2.600 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, mounting_method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM 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 5950-00-051-0365, 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
3B90031-105
NSN: 5950-00-051-0365
FSC: 5950
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
body_width1.700 INCHES MAXIMUM IN
body_height2.650 INCHES MAXIMUM IN
body_length2.600 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
winding_power_rating100.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE PRIMARY INPUT
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp200.0 CELSIUS DEGC
mounting_hole_diameter0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM SINGLE GROUP IN
winding_operating_current1.6 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
winding_operating_voltage28.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY OUTPUT
NSN5950-00-051-0365
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER AUTOTRANSFORME TITLE COMPONENT PN 3B90031-105 MFR TRANSFORMER,POWER AUTO
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP
•
FREQUENCY RATING: 380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
•
BODY HEIGHT: 2.650 INCHES MAXIMUM IN
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
MOUNTING HOLE DIAMETER: 0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM SINGLE GROUP IN
•
INCLOSURE TYPE: FULLY INCLOSED
•
WINDING OPERATING VOLTAGE: 113.50 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH: 1.200 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY QUANTITY4 SINGLE GROUP
FREQUENCY RATING380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
BODY HEIGHT2.650 INCHES MAXIMUM IN
RELIABILITY INDICATORNOT ESTABLISHED
MOUNTING HOLE DIAMETER0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM SINGLE GROUP IN
INCLOSURE TYPEFULLY INCLOSED
WINDING OPERATING VOLTAGE113.50 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH1.200 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
MOUNTING METHODFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
8393XSInterchangeable
interchangeable cross-reference
interchangeable
3771910Interchangeable
interchangeable cross-reference
interchangeable
42843Interchangeable
interchangeable cross-reference
interchangeable
30580Interchangeable
interchangeable cross-reference
interchangeable
9476Interchangeable
interchangeable cross-reference
interchangeable
H90038Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3B90031-105?
3B90031-105 is a TRANSFORMER,POWER AUTOTRANSFORME.
What parts can replace 3B90031-105?
There are 12 known substitutes for 3B90031-105: 8393XS, 3771910, 42843 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3B90031-105?
3B90031-105 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-051-0365. 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.
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Last verified: July 2026