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Technical Data Sheet
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17B221-255A — Technical Data Sheet

✓ 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,PAPER DIELECTRIC. Key specifications include body_style: W/MTG BRACKET, AXIAL TERMINALS, body_length: 3.125 INCHES NOMINAL IN, body_diameter: 1.500 INCHES NOMINAL IN, features_provided: HERMETICALLY SEALED CASE, mounting_slot_width: 0.250 INCHES NOMINAL IN, reliability_indicator: NOT ESTABLISHED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5910-00-553-6668, 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→ 17B221-255A
NSN: 5910-00-553-6668
FSC: 5910
CAGE: 58364 — BYCAP INC (USA)
SPECIFICATIONS
body_styleW/MTG BRACKET, AXIAL TERMINALS
body_length3.125 INCHES NOMINAL IN
body_diameter1.500 INCHES NOMINAL IN
features_providedHERMETICALLY SEALED CASE
mounting_slot_width0.250 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
nonderated_operating_temp-55.0 CELSIUS MINIMUM AND 70.0 CELSIUS MAXIMUM DEGC
terminal_type_and_quantity2 TAB, SOLDER LUG
tolerance_range_per_section-10.00 TO 10.00 PERCENT SINGLE SECTION
schematic_diagram_designatorNO COMMON OR GROUNDED ELECTRODE(S)
capacitance_value_per_section2.500 MICROFARADS SINGLE SECTION
mounting_facility_type_and_quantity1 MOUNTING SLOTS
NSN5910-00-553-6668
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PAPER DIELECTRIC TITLE COMPONENT PN 17B221-255A MFR CAPACITOR,FIXED,PAPER
KEY FEATURES
•
BODY DIAMETER: 1.500 INCHES NOMINAL IN
•
FEATURES PROVIDED: HERMETICALLY SEALED CASE
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 MOUNTING SLOTS
•
CAPACITANCE VALUE PER SECTION: 2.500 MICROFARADS SINGLE SECTION
•
MOUNTING SLOT WIDTH: 0.250 INCHES NOMINAL IN
•
BODY LENGTH: 3.125 INCHES NOMINAL IN
•
TOLERANCE RANGE PER SECTION: -10.00 TO 10.00 PERCENT SINGLE SECTION
•
SCHEMATIC DIAGRAM DESIGNATOR: NO COMMON OR GROUNDED ELECTRODE(S)
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
BODY DIAMETER1.500 INCHES NOMINAL IN
FEATURES PROVIDEDHERMETICALLY SEALED CASE
MOUNTING FACILITY TYPE AND QUANTITY1 MOUNTING SLOTS
CAPACITANCE VALUE PER SECTION2.500 MICROFARADS SINGLE SECTION
MOUNTING SLOT WIDTH0.250 INCHES NOMINAL IN
BODY LENGTH3.125 INCHES NOMINAL IN
TOLERANCE RANGE PER SECTION-10.00 TO 10.00 PERCENT SINGLE SECTION
SCHEMATIC DIAGRAM DESIGNATORNO COMMON OR GROUNDED ELECTRODE(S)
NONDERATED OPERATING TEMP-55.0 CELSIUS MINIMUM AND 70.0 CELSIUS MAXIMUM DEGC
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION220.0 AC-RMS SINGLE SECTION AND 100.0 DC SINGLE SECTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
1920-5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
216440InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1855082InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
019205InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2084165InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
54556HInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 17B221-255A?
17B221-255A is a CAPACITOR,FIXED,PAPER DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 17B221-255A?
There are 20 known substitutes for 17B221-255A: 1920-5, 216440, 1855082 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 17B221-255A?
17B221-255A is cataloged in the Federal Logistics Information System under NSN 5910-00-553-6668. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026