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H173 ✓ 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 material: COPPER ALLOY 932 OVERALL, body_width: 3.937 INCHES NOMINAL IN, body_height: 5.250 INCHES NOMINAL IN, body_length: 3.375 INCHES NOMINAL IN, corner_shape: SQUARE ALL CORNERS, rating_method: ELECTRICAL SINGLE COMPONENT ALL WINDING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-356-1166, 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
H173
NSN: 2805-00-356-1166
FSC: 2805
CAGE: 77220 — DANA CORP ENGINE PRODUCTS DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY 932 OVERALL
body_width3.937 INCHES NOMINAL IN
body_height5.250 INCHES NOMINAL IN
body_length3.375 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
rating_methodELECTRICAL SINGLE COMPONENT ALL WINDING
inclosure_typeHERMETICALLY SEALED
overall_height0.312 INCHES NOMINAL IN
overall_length3.4950 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
hardness_rating63.0 ROCKWELL E NOMINAL OVERALL
inductance_typeSWINGING
mounting_methodTHREADED STUD(S) SINGLE GROUP
NSN2805-00-356-1166
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,MICA DIELECTRIC TITLE COMPONENT PN H173 MFR CAPACITOR,FIXED,MICA D
KEY FEATURES
•
THREAD PROVISION: UNTHREADED
•
LARGEST OUTSIDE WIDTH: 0.750 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
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)
THREAD PROVISIONUNTHREADED
LARGEST OUTSIDE WIDTH0.750 INCHES NOMINAL IN
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
OVERALL HEIGHT0.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
IPD2A4429Interchangeable
interchangeable cross-reference
interchangeable
17KP439Interchangeable
interchangeable cross-reference
interchangeable
R118Interchangeable
interchangeable cross-reference
interchangeable
7311954Interchangeable
interchangeable cross-reference
interchangeable
75102Interchangeable
interchangeable cross-reference
interchangeable
H1098MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H173?
H173 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace H173?
There are 25 known substitutes for H173: IPD2A4429, 17KP439, R118 and 22 more. Substitute compatibility should be verified for your specific system.
Is H173 still available?
H173 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