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Technical Data Sheet
1B139 ✓ 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: 1.875 INCHES NOMINAL IN, body_height: 1.437 INCHES NOMINAL IN, body_length: 2.250 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, inductance_type: FIXED, mounting_method: FLANGE AND 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 5950-00-645-5868, 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
1B139
NSN: 5950-00-645-5868
FSC: 5950
CAGE: 88431 — GENERAL TRANSFORMER CO (USA)
SPECIFICATIONS
body_width1.875 INCHES NOMINAL IN
body_height1.437 INCHES NOMINAL IN
body_length2.250 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
inductance_typeFIXED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
special_features1.6 KV RMS TEST VOLTAGE; CASE METAL MATERIAL
winding_quantity1 SINGLE COMPONENT
inductance_rating40.00 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
reliability_indicatorNOT ESTABLISHED
winding_operating_current12.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
mounting_facility_quantity2 SINGLE GROUP
NSN5950-00-645-5868
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available REACTOR TITLE COMPONENT PN 1B139 MFR REACTOR
KEY FEATURES
RELIABILITY INDICATOR: NOT ESTABLISHED
BODY HEIGHT: 1.437 INCHES NOMINAL IN
INDUCTANCE RATING: 40.00 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
BODY LENGTH: 2.250 INCHES NOMINAL IN
WINDING QUANTITY: 1 SINGLE COMPONENT
WINDING OPERATING CURRENT: 12.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
DC RESISTANCE RATING IN OHMS: 1500.000 SINGLE COMPONENT SINGLE WINDING
TECHNICAL CHARACTERISTICS (FLIS)
RELIABILITY INDICATORNOT ESTABLISHED
BODY HEIGHT1.437 INCHES NOMINAL IN
INDUCTANCE RATING40.00 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
DISTANCE BETWEEN MOUNTING FACILITY CENTERS1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
BODY LENGTH2.250 INCHES NOMINAL IN
WINDING QUANTITY1 SINGLE COMPONENT
WINDING OPERATING CURRENT12.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
DC RESISTANCE RATING IN OHMS1500.000 SINGLE COMPONENT SINGLE WINDING
SPECIAL FEATURES1.6 KV RMS TEST VOLTAGE; CASE METAL MATERIAL
MOUNTING FACILITY QUANTITY2 SINGLE GROUP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
6914-736Interchangeable
interchangeable cross-reference
interchangeable
0750-031-00Interchangeable
interchangeable cross-reference
interchangeable
1600-6Interchangeable
interchangeable cross-reference
interchangeable
G3254Interchangeable
interchangeable cross-reference
interchangeable
90-761-2409Interchangeable
interchangeable cross-reference
interchangeable
20155 PC3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B139?
1B139 is a REACTOR.
What parts can replace 1B139?
There are 8 known substitutes for 1B139: 6914-736, 0750-031-00, 1600-6 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B139?
1B139 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-645-5868. This indicates validated use in U.S. government and defense supply chains.
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