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Technical Data Sheet
PartsTable / MRO / SD4-1A
SD4-1A ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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,PLASTIC DIELECTR. Key specifications include material: GLASS CASE, body_style: TUBE TYPE, overall_length: 1.250 INCHES NOMINAL IN, overall_diameter: 0.125 INCHES NOMINAL IN, interruption_indicator_method: VISIBLE ELEMENT, maximum_voltage_rating_in_volts: 250.0 AC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5920-00-284-9220, 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
MRO→ MRO_GENERAL→ SD4-1A
NSN: 5920-00-284-9220
FSC: 5920
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
materialGLASS CASE
body_styleTUBE TYPE
overall_length1.250 INCHES NOMINAL IN
overall_diameter0.125 INCHES NOMINAL IN
interruption_indicator_methodVISIBLE ELEMENT
maximum_voltage_rating_in_volts250.0 AC
continuous_current_rating_in_amps1.000
circuit_over-current_interruption_typeDELAY TIME
circuit_over-current_interruption_delay_time_in_seconds14400.0 110 PCT OF CURRENT RATING AND 3600.0 135 PCT OF CURRENT RATING AND 5.0 200 PCT OF CURRENT RATING
NSN5920-00-284-9220
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PLASTIC DIELECTR TITLE COMPONENT PN SD4-1A MFR CAPACITOR,FIXED,PLASTI
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
20468Interchangeable
interchangeable cross-reference
interchangeable
CR77049PC138Interchangeable
interchangeable cross-reference
interchangeable
1000R1888-1Interchangeable
interchangeable cross-reference
interchangeable
1000R188-1Interchangeable
interchangeable cross-reference
interchangeable
209769Interchangeable
interchangeable cross-reference
interchangeable
943J3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SD4-1A?
SD4-1A is a CAPACITOR,FIXED,PLASTIC DIELECTR. It is classified as a MRO (MRO_GENERAL).
What parts can replace SD4-1A?
There are 32 known substitutes for SD4-1A: 20468, CR77049PC138, 1000R1888-1 and 29 more. Substitute compatibility should be verified for your specific system.
Is SD4-1A still available?
SD4-1A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026