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Technical Data Sheet

MIL-PRF-19978/1 — CAPACITOR,FIXED,PLASTIC DIELECTR

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

MIL-PRF-19978/1: CAPACITOR,FIXED,PLASTIC DIELECTR.

CAPACITOR,FIXED,PLASTIC DIELECTR. Key specifications include material: CERAMIC OR GLASS CASE, body_style: W/MTG BRACKET, AXIAL TERMINALS, body_length: 1.625 INCHES NOMINAL IN, body_diameter: 0.562 INCHES NOMINAL IN, terminal_length: 1.625 INCHES NOMINAL IN, special_features: VIBRATION GRADE 10 TO 55 HZ INCLUSIVE. This part is cataloged in the U.S.

Government catalog under NSN 5910-00-006-1329, 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→ MIL-PRF-19978/1
NSN: 5910-00-006-1329
NIINs: 000061329, 000181662, 001107320, 001441569, 001479828, 001479829, 001479830, 001500843, 002233137, 002322399, 002331777, 002432032, 002475775, 003564196, 004446706, 004451516, 004517505, 004517506, 004661548, 004820229, 004854930, 005632419, 005862489, 007271917, 007600184, 007827718, 008607707, 009032362, 009034081, 009049883, 009054033, 009121770, 009449305, 009459545, 009489135, 009497919, 009497936, 009497959, 009529440, 009582527, 009789980, 009789985, 010211023, 010228983, 010513214, 010514049, 010610667, 011210369, 011230737, 011546773, 011546774, 012159033, 012288154, 012334109, 012581894, 012617794, 012617795, 012736677, 013276983, 013698261, 013749238, 014344593, 014871386, 015033392, 015358036, 015436370, 015692550, 015966152, 015966153
FSC: 5910 — Capacitors
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialCERAMIC OR GLASS CASE
body_styleW/MTG BRACKET, AXIAL TERMINALS
body_length1.625 INCHES NOMINAL IN
body_diameter0.562 INCHES NOMINAL IN
terminal_length1.625 INCHES NOMINAL IN
special_featuresVIBRATION GRADE 10 TO 55 HZ INCLUSIVE
features_providedHERMETICALLY SEALED CASE
terminal_diameter0.025 INCHES NOMINAL IN
dielectric_materialPLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER)
nominal_thread_size0.312 INCHES IN
reliability_indicatorESTABLISHED
end_item_identificationPATRIOT SPECIFIC MATERIAL PPE
NSN5910-00-006-1329
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PLASTIC DIELECTR TITLE COMPONENT PN MIL-PRF-19978/1 MFR CAPACITOR,FIXED,PLASTI
KEY FEATURES
•
BODY DIAMETER: 0.562 INCHES NOMINAL IN
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 THREADED BUSHING
•
BODY STYLE: W/THD BUSHING MTG, TERMINALS ON OPPOSITE ENDS
•
TOLERANCE RANGE PER SECTION: -5.00 TO 5.00 PERCENT SINGLE SECTION
•
NONDERATED OPERATING TEMP: -65.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
•
TERMINAL SURFACE TREATMENT: SOLDER
•
TERMINAL LENGTH: 1.625 INCHES MINIMUM IN
•
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR: UNF
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 DIAMETER0.562 INCHES NOMINAL IN
MOUNTING FACILITY TYPE AND QUANTITY1 THREADED BUSHING
BODY STYLEW/THD BUSHING MTG, TERMINALS ON OPPOSITE ENDS
TOLERANCE RANGE PER SECTION-5.00 TO 5.00 PERCENT SINGLE SECTION
NONDERATED OPERATING TEMP-65.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
TERMINAL SURFACE TREATMENTSOLDER
TERMINAL LENGTH1.625 INCHES MINIMUM IN
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATORUNF
FEATURES PROVIDEDMOUNTING HARDWARE AND HERMETICALLY SEALED CASE
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION400.0 DC SINGLE SECTION
OTHER ITEMS IN FSC 5910 — Capacitors
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5910-00-000-1038 5910-00-000-1049 5910-00-000-1080 5910-00-000-6838 5910-00-001-1913 5910-00-001-2576 5910-00-001-2577 5910-00-001-2578
SUBSTITUTES & CROSS-REFERENCES 2
CQ13A1KE224J3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MILC19978-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MIL-PRF-19978/1?
MIL-PRF-19978/1 is a CAPACITOR,FIXED,PLASTIC DIELECTR. It is classified as a MRO (MRO_GENERAL).
What parts can replace MIL-PRF-19978/1?
There are 2 known substitutes for MIL-PRF-19978/1: CQ13A1KE224J3, MILC19978-1. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-PRF-19978/1?
MIL-PRF-19978/1 is cataloged in the U.S. Government catalog under NSN 5910-00-006-1329. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.