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Technical Data Sheet
PartsTable / COMPONENT / B44-4X
B44-4X ✓ 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 material: PLASTIC VINYL TUBE, flexibility: FLEXIBLE, temp_rating: -47.0 FAHRENHEIT AND 165.0 FAHRENHEIT SINGLE RESPONSE DEGF, exterior_color: CLEAR, wall_thickness: 0.094 INCHES NOMINAL IN, inside_diameter: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-018-6617, 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
B44-4X
NSN: 4720-00-018-6617
FSC: 4720
CAGE: 34384 — NORTON CO SPECIALTY PLASTICS DIV (USA)
SPECIFICATIONS
materialPLASTIC VINYL TUBE
flexibilityFLEXIBLE
temp_rating-47.0 FAHRENHEIT AND 165.0 FAHRENHEIT SINGLE RESPONSE DEGF
exterior_colorCLEAR
wall_thickness0.094 INCHES NOMINAL IN
inside_diameter0.500 INCHES NOMINAL IN
outside_diameter0.688 INCHES NOMINAL IN
operating_pressure128.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
burst_test_pressure400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
end_item_identificationGRUMMAN A10 AIRCRAFT
inside_surface_conditionSMOOTH
media_for_which_designedLIQUID, INGESTED SINGLE RESPONSE
NSN4720-00-018-6617
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: B44-4X · 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 18
B44-4X 3/8X1/2Interchangeable
interchangeable cross-reference
interchangeable
B44-4Interchangeable
interchangeable cross-reference
interchangeable
FG12Interchangeable
interchangeable cross-reference
interchangeable
VINCON1/2X3/4Interchangeable
interchangeable cross-reference
interchangeable
B44-4XInterchangeable
interchangeable cross-reference
interchangeable
B44-4X 1/2X3/4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B44-4X?
B44-4X is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace B44-4X?
There are 18 known substitutes for B44-4X: B44-4X 3/8X1/2, B44-4, FG12 and 15 more. Substitute compatibility should be verified for your specific system.
Is B44-4X still available?
B44-4X 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