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L858 ✓ 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_length: 10.000 INCHES NOMINAL IN, overall_width: 8.375 INCHES NOMINAL IN, inclosure_type: PARTIALLY INCLOSED, DOUBLE SHELL, overall_height: 6.875 INCHES NOMINAL IN, overall_length: 13.500 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S) SINGLE GROUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-243-5805, 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
L858
NSN: 5950-00-243-5805
FSC: 5950
CAGE: 90095 — INRCORE, LLC DIV INRCORE (USA)
SPECIFICATIONS
body_length10.000 INCHES NOMINAL IN
overall_width8.375 INCHES NOMINAL IN
inclosure_typePARTIALLY INCLOSED, DOUBLE SHELL
overall_height6.875 INCHES NOMINAL IN
overall_length13.500 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S) SINGLE GROUP
frequency_rating55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter0.375 INCHES NOMINAL SINGLE GROUP IN
winding_operating_current400.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
winding_operating_voltage2.26 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
mounting_facility_quantity4 SINGLE GROUP
NSN5950-00-243-5805
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER TITLE COMPONENT PN L858 MFR TRANSFORMER,POWER
KEY FEATURES
•
WINDING FUNCTION AND QUANTITY: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH: 6.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
MOUNTING METHOD: UNTHREADED HOLE(S) SINGLE GROUP
•
MOUNTING HOLE DIAMETER: 0.375 INCHES NOMINAL SINGLE GROUP IN
•
TERMINAL TYPE AND QUANTITY: 9 SOLDER STUD
•
WINDING OPERATING VOLTAGE: 2.26 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
TECHNICAL CHARACTERISTICS (FLIS)
WINDING FUNCTION AND QUANTITY1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
OVERALL HEIGHT6.875 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH6.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
OVERALL WIDTH8.375 INCHES NOMINAL IN
MOUNTING METHODUNTHREADED HOLE(S) SINGLE GROUP
MOUNTING HOLE DIAMETER0.375 INCHES NOMINAL SINGLE GROUP IN
TERMINAL TYPE AND QUANTITY9 SOLDER STUD
WINDING OPERATING VOLTAGE2.26 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
FREQUENCY RATING55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT
MOUNTING FACILITY QUANTITY4 SINGLE GROUP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
42939Interchangeable
interchangeable cross-reference
interchangeable
763694Interchangeable
interchangeable cross-reference
interchangeable
844-1Interchangeable
interchangeable cross-reference
interchangeable
ROM/PROM FAMILY 013Interchangeable
interchangeable cross-reference
interchangeable
S82S123F/883CInterchangeable
interchangeable cross-reference
interchangeable
722913-50Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L858?
L858 is a TRANSFORMER,POWER.
What parts can replace L858?
There are 10 known substitutes for L858: 42939, 763694, 844-1 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L858?
L858 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-243-5805. 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