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ST42D ✓ 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

CAPACITOR,FIXED,MICA DIELECTRIC. Key specifications include body_style: BUSHING MOUNT, body_width: 0.641 INCHES MAXIMUM IN, body_length: 1.157 INCHES MAXIMUM IN, thread_class: 2A A, overall_width: 0.641 INCHES MAXIMUM IN, actuator_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-259-8420, 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
ST42D
NSN: 5930-00-259-8420
FSC: 5930
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
body_styleBUSHING MOUNT
body_width0.641 INCHES MAXIMUM IN
body_length1.157 INCHES MAXIMUM IN
thread_class2A A
overall_width0.641 INCHES MAXIMUM IN
actuator_styleROUND
bushing_length0.470 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_height2.238 INCHES NOMINAL IN
overall_length1.157 INCHES MAXIMUM IN
actuator_height0.690 INCHES NOMINAL IN
mounting_methodTHREADED BUSHING
NSN5930-00-259-8420
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,MICA DIELECTRIC TITLE COMPONENT PN ST42D MFR CAPACITOR,FIXED,MICA D
KEY FEATURES
•
MAXIMUM VOLTAGE RATING IN VOLTS: 24.0 AC AND 24.0 AC AND 24.0 DC24.0 DC
•
TERMINAL TYPE AND QUANTITY: 3 TAB, SOLDER LUG3 TAB, SOLDER LUG
•
CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE: 20.000 AMPERES RESISTIVE DC AND 20.000 AMPERES RESISTIVE DC AND 20.000 AMPERES RESISTIVE AC20.000 AMPERES RESISTIVE AC
•
NONPILE-UP CONTACT ARRANGEMENT: 1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESPHENOLIC PARTS COVERED W/FUNGICIDAL VARNISH OR IMPREGNATED W/TROPICALIZED WAXPHENOLIC PARTS COVERED W/FUNGICIDAL VARNISH OR IMPREGNATED W/TROPICALIZED WAX
MAXIMUM VOLTAGE RATING IN VOLTS24.0 AC AND 24.0 AC AND 24.0 DC24.0 DC
TERMINAL TYPE AND QUANTITY3 TAB, SOLDER LUG3 TAB, SOLDER LUG
CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE20.000 AMPERES RESISTIVE DC AND 20.000 AMPERES RESISTIVE DC AND 20.000 AMPERES RESISTIVE AC20.000 AMPERES RESISTIVE AC
NONPILE-UP CONTACT ARRANGEMENT1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
502683Interchangeable
interchangeable cross-reference
interchangeable
8810K22Interchangeable
interchangeable cross-reference
interchangeable
400004-15Interchangeable
interchangeable cross-reference
interchangeable
855338Interchangeable
interchangeable cross-reference
interchangeable
B511M36Interchangeable
interchangeable cross-reference
interchangeable
5930PL1366474Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST42D?
ST42D is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace ST42D?
There are 10 known substitutes for ST42D: 502683, 8810K22, 400004-15 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST42D?
ST42D is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-259-8420. 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