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T4557 ✓ 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 REACTOR is a the manufacturer industrial component. Key specifications include body_width: 1.545 INCHES MINIMUM AND 1.555 INCHES MAXIMUM IN, body_height: 1.445 INCHES MINIMUM AND 1.455 INCHES MAXIMUM IN, body_length: 2.045 INCHES MINIMUM AND 2.055 INCHES MAXIMUM IN, rating_method: ELECTRICAL AND WINDING TURNS SINGLE COMPONENT ALL WINDING, turn_quantity: 22 SINGLE COMPONENT ALL WINDING, inclosure_type: FULLY INCLOSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-305-2969, 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
T4557
NSN: 5950-01-305-2969
FSC: 5950
CAGE: 53342 — OPT INDUSTRIES INC DIV OF ELECTRONIKA INC (USA)
SPECIFICATIONS
body_width1.545 INCHES MINIMUM AND 1.555 INCHES MAXIMUM IN
body_height1.445 INCHES MINIMUM AND 1.455 INCHES MAXIMUM IN
body_length2.045 INCHES MINIMUM AND 2.055 INCHES MAXIMUM IN
rating_methodELECTRICAL AND WINDING TURNS SINGLE COMPONENT ALL WINDING
turn_quantity22 SINGLE COMPONENT ALL WINDING
inclosure_typeFULLY INCLOSED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating10.0 KILOHERTZ NOMINAL SINGLE COMPONENT
winding_quantity2 SINGLE COMPONENT
inductance_rating94.00 MICROHENRIES MINIMUM SINGLE COMPONENT ALL WINDING
nominal_thread_size0.112 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
NSN5950-01-305-2969
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available REACTOR TITLE COMPONENT PN T4557 MFR REACTOR
KEY FEATURES
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
BODY HEIGHT: 1.445 INCHES MINIMUM AND 1.455 INCHES MAXIMUM IN
•
WINDING CONDUCTOR SIZE: 0.04030 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT ALL WINDING IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH: 1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
DC RESISTANCE RATING IN OHMS: 38.000 SINGLE COMPONENT ALL WINDING
•
WINDING QUANTITY: 2 SINGLE COMPONENT
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
•
FREQUENCY RATING: 10.0 KILOHERTZ NOMINAL SINGLE COMPONENT
TECHNICAL CHARACTERISTICS (FLIS)
RELIABILITY INDICATORNOT ESTABLISHED
BODY HEIGHT1.445 INCHES MINIMUM AND 1.455 INCHES MAXIMUM IN
WINDING CONDUCTOR SIZE0.04030 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT ALL WINDING IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
DC RESISTANCE RATING IN OHMS38.000 SINGLE COMPONENT ALL WINDING
WINDING QUANTITY2 SINGLE COMPONENT
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
FREQUENCY RATING10.0 KILOHERTZ NOMINAL SINGLE COMPONENT
TURN QUANTITY22 SINGLE COMPONENT ALL WINDING
TERMINAL TYPE AND QUANTITY4 PIN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
110S 51/64Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751Interchangeable
interchangeable cross-reference
interchangeable
T-100-SMInterchangeable
interchangeable cross-reference
interchangeable
B 0292Interchangeable
interchangeable cross-reference
interchangeable
5304037Interchangeable
interchangeable cross-reference
interchangeable
14202Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T4557?
T4557 is a REACTOR.
What parts can replace T4557?
There are 12 known substitutes for T4557: 110S 51/64, GGG-D-751, T-100-SM and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for T4557?
T4557 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-305-2969. 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