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Technical Data Sheet
PartsTable / COMPONENT / 3120B1
3120B1 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include body_width: 5.625 INCHES NOMINAL IN, body_height: 5.750 INCHES NOMINAL IN, body_length: 8.250 INCHES NOMINAL IN, inclosure_type: PARTIALLY INCLOSED, DOUBLE SHELL, mounting_method: SLOT SINGLE GROUP, frequency_rating: 50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL 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 5950-00-898-7916, 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
3120B1
NSN: 5950-00-898-7916
FSC: 5950
CAGE: 72149 — ELECTRONIC TRANSFORMER CORP DIV ELECTRONIC TRANSFORMER CORPORATION (USA)
SPECIFICATIONS
body_width5.625 INCHES NOMINAL IN
body_height5.750 INCHES NOMINAL IN
body_length8.250 INCHES NOMINAL IN
inclosure_typePARTIALLY INCLOSED, DOUBLE SHELL
mounting_methodSLOT SINGLE GROUP
frequency_rating50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
mounting_slot_width0.156 INCHES NOMINAL SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
winding_operating_current8.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
winding_operating_voltage6.20 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
mounting_facility_quantity4 SINGLE GROUP
terminal_type_and_quantity7 WIRE LEAD
NSN5950-00-898-7916
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,NON TITLE COMPONENT PN 3120B1 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
INPUT-OUTPUT PHASE RELATIONSHIP: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
•
TERMINAL TYPE AND QUANTITY: 7 WIRE LEAD
•
BODY HEIGHT: 5.750 INCHES NOMINAL IN
•
MOUNTING METHOD: SLOT SINGLE GROUP
•
MOUNTING SLOT WIDTH: 0.156 INCHES NOMINAL SINGLE GROUP IN
•
MAXIMUM TRANSFORMER POWER RATING: 15.0 DECIBELS SINGLE COMPONENT
•
WINDING OPERATING VOLTAGE: 6.20 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
•
BODY LENGTH: 8.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
INPUT-OUTPUT PHASE RELATIONSHIPSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
TERMINAL TYPE AND QUANTITY7 WIRE LEAD
BODY HEIGHT5.750 INCHES NOMINAL IN
MOUNTING METHODSLOT SINGLE GROUP
MOUNTING SLOT WIDTH0.156 INCHES NOMINAL SINGLE GROUP IN
MAXIMUM TRANSFORMER POWER RATING15.0 DECIBELS SINGLE COMPONENT
WINDING OPERATING VOLTAGE6.20 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
BODY LENGTH8.250 INCHES NOMINAL IN
INCLOSURE TYPEPARTIALLY INCLOSED, DOUBLE SHELL
WINDING OPERATING CURRENT8.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
275000NInterchangeable
interchangeable cross-reference
interchangeable
2131-5190Interchangeable
interchangeable cross-reference
interchangeable
73232Interchangeable
interchangeable cross-reference
interchangeable
117Interchangeable
Same NIIN cross-reference
interchangeable
173232Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3120B1?
3120B1 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace 3120B1?
There are 5 known substitutes for 3120B1: 275000N, 2131-5190, 73232 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3120B1?
3120B1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-898-7916. 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