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Technical Data Sheet
PartsTable / COMPONENT / SM-B-387581
SM-B-387581 ✓ 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_style: HOLE MOUNTED, body_width: 0.250 INCHES NOMINAL IN, body_height: 0.438 INCHES NOMINAL IN, body_length: 0.781 INCHES NOMINAL IN, actuator_style: RECTANGULAR, actuator_width: 0.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-884-0762, 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
SM-B-387581
NSN: 5930-00-884-0762
FSC: 5930
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
body_styleHOLE MOUNTED
body_width0.250 INCHES NOMINAL IN
body_height0.438 INCHES NOMINAL IN
body_length0.781 INCHES NOMINAL IN
actuator_styleRECTANGULAR
actuator_width0.125 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
actuator_height0.093 INCHES NOMINAL IN
actuator_length0.125 INCHES NOMINAL IN
actuator_movement0.045 PRETRAVEL INCHES MAXIMUM AND 0.012 OVERTRAVEL INCHES MINIMUM AND 0.020 DIFFERENTIAL INCHES NOMINAL
switch_release_force10.0 GRAMS MINIMUM G
switch_actuating_force2.0 OUNCES MAXIMUM OZ
NSN5930-00-884-0762
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,NON TITLE COMPONENT PN SM-B-387581 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 0.500 INCHES NOMINAL IN
•
BODY WIDTH: 0.250 INCHES NOMINAL IN
•
ACTUATOR MOVEMENT: 0.045 PRETRAVEL INCHES MAXIMUM AND 0.012 OVERTRAVEL INCHES MINIMUM AND 0.020 DIFFERENTIAL INCHES NOMINAL
•
CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE: 10.000 AMPERES RESISTIVE DC AND 10.000 AMPERES RESISTIVE AC
•
INCLOSURE TYPE: FULLY INCLOSED
•
TERMINAL TYPE AND QUANTITY: 2 TAB, SOLDER LUG
•
ACTUATOR FREE POSITION HEIGHT: 0.406 INCHES NOMINAL IN
•
ACTUATOR STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH0.500 INCHES NOMINAL IN
BODY WIDTH0.250 INCHES NOMINAL IN
ACTUATOR MOVEMENT0.045 PRETRAVEL INCHES MAXIMUM AND 0.012 OVERTRAVEL INCHES MINIMUM AND 0.020 DIFFERENTIAL INCHES NOMINAL
CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE10.000 AMPERES RESISTIVE DC AND 10.000 AMPERES RESISTIVE AC
INCLOSURE TYPEFULLY INCLOSED
TERMINAL TYPE AND QUANTITY2 TAB, SOLDER LUG
ACTUATOR FREE POSITION HEIGHT0.406 INCHES NOMINAL IN
ACTUATOR STYLERECTANGULAR
NONPILE-UP CONTACT ARRANGEMENT1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION SINGLE SWITCH UNIT
ACTUATOR HEIGHT0.093 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
20145Interchangeable
interchangeable cross-reference
interchangeable
CH228Interchangeable
interchangeable cross-reference
interchangeable
CH221Interchangeable
interchangeable cross-reference
interchangeable
B7C8286AInterchangeable
interchangeable cross-reference
interchangeable
533830PC145Interchangeable
interchangeable cross-reference
interchangeable
S150-412KPC145Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM-B-387581?
SM-B-387581 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace SM-B-387581?
There are 20 known substitutes for SM-B-387581: 20145, CH228, CH221 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-387581?
SM-B-387581 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-884-0762. 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