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Technical Data Sheet
PartsTable / COMPONENT / 221LT8
221LT8 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include width: 18.000 INCHES NOMINAL IN, length: 0.188 INCHES NOMINAL SQUARE END IN, material: BRONZE BODY, end_style: SPRING END,GROUND BOTH ENDS, load_type: RESISTIVE, anode_type: SOLID. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-717-1701, 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
221LT8
NSN: 4720-00-717-1701
FSC: 4720
CAGE: 98441 — PARKER HANNIFIN CORP DBA PNEUTRONICS DIV STRATOFLEX PRODUCTS DIVISION (USA)
SPECIFICATIONS
width18.000 INCHES NOMINAL IN
length0.188 INCHES NOMINAL SQUARE END IN
materialBRONZE BODY
end_styleSPRING END,GROUND BOTH ENDS
load_typeRESISTIVE
anode_typeSOLID
body_styleW/O MTG FACILITIES, AXIAL TERMINALS
body_width0.750 INCHES NOMINAL IN
usage_formSHEET
body_height2.000 INCHES NOMINAL IN
body_length4.000 INCHES NOMINAL IN
bonnet_typeINSIDE SPRING
NSN4720-00-717-1701
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 221LT8 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
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 30
2BE910Interchangeable
interchangeable cross-reference
interchangeable
8QWInterchangeable
interchangeable cross-reference
interchangeable
100R5-8Interchangeable
interchangeable cross-reference
interchangeable
203830PC403Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-24787Interchangeable
interchangeable cross-reference
interchangeable
CMC-4-5803-12-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 221LT8?
221LT8 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace 221LT8?
There are 30 known substitutes for 221LT8: 2BE910, 8QW, 100R5-8 and 27 more. Substitute compatibility should be verified for your specific system.
Is 221LT8 still available?
221LT8 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