MIL-C-19978/1 — Technical Data Sheet

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— · 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,PLASTIC DIELECTR. Key specifications include body_style: W/O MTG FACILITIES, AXIAL TERMINALS, body_length: 0.675 INCHES NOMINAL IN, body_diameter: 0.322 INCHES NOMINAL IN, terminal_length: 1.625 INCHES MINIMUM AND 1.725 INCHES MAXIMUM IN, features_provided: HERMETICALLY SEALED CASE, terminal_diameter: 0.025 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) 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-C-19978/1

NSN: 5910-00-006-1329
FSC: 5910
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

SPECIFICATIONS

body_style	W/O MTG FACILITIES, AXIAL TERMINALS
body_length	0.675 INCHES NOMINAL IN
body_diameter	0.322 INCHES NOMINAL IN
terminal_length	1.625 INCHES MINIMUM AND 1.725 INCHES MAXIMUM IN
special_features	MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS.
features_provided	HERMETICALLY SEALED CASE
terminal_diameter	0.025 INCHES NOMINAL IN
dielectric_material	PAPER AND PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER)
nominal_thread_size	0.438 INCHES IN
reliability_indicator	ESTABLISHED
end_item_identification	5805-01-138-2751 FREQUENCY CONVE
case_insulation_material	PLASTIC
NSN	5910-00-006-1329

COMPONENT DIAGRAM

KEY FEATURES

•

RELIABILITY INDICATOR: NOT ESTABLISHED

•

NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION: 400.0 DC SINGLE SECTION

•

SCHEMATIC DIAGRAM DESIGNATOR: ELECTRODE(S) GROUNDED TO CASE, W/GND TERMINAL

•

INSULATION RESISTANCE AT REFERENCE TEMP: 25000.0 MEGOHMS

•

NOMINAL THREAD SIZE: 0.312 INCHES IN

•

SPECIFICATION/STANDARD DATA: 81349-MIL-C-19978/1 GOVERNMENT SPECIFICATION

•

BODY LENGTH: 1.625 INCHES NOMINAL IN

•

TERMINAL LENGTH: 1.625 INCHES MINIMUM IN

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)

RELIABILITY INDICATOR	NOT ESTABLISHED
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION	400.0 DC SINGLE SECTION
SCHEMATIC DIAGRAM DESIGNATOR	ELECTRODE(S) GROUNDED TO CASE, W/GND TERMINAL
INSULATION RESISTANCE AT REFERENCE TEMP	25000.0 MEGOHMS
NOMINAL THREAD SIZE	0.312 INCHES IN
SPECIFICATION/STANDARD DATA	81349-MIL-C-19978/1 GOVERNMENT SPECIFICATION
BODY LENGTH	1.625 INCHES NOMINAL IN
TERMINAL LENGTH	1.625 INCHES MINIMUM IN
TERMINAL TYPE AND QUANTITY	2 UNINSULATED WIRE LEAD
INSULATION RESISTANCE AT MAXIMUM OPERATING TEMP	20.0 MEGOHM-MICROFARADS

VERIFIED SUBSTITUTES & CROSS-REFERENCES 7

55-0436-3341AASame_fsc

same_fsc cross-reference

same_fsc

VCJ1690Same_fsc

same_fsc cross-reference

same_fsc

1716257-2Same_fsc

same_fsc cross-reference

same_fsc

1716257-1Same_fsc

same_fsc cross-reference

same_fsc

VCJ1689BSame_fsc

same_fsc cross-reference

same_fsc

CQ13A1KE224J3Interchangeable

Same NIIN cross-reference

interchangeable

LIFECYCLE

StatusACTIVE

AvailabilityOEM and secondary market

RoHS CompliantEAR99Not HAZMAT

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FREQUENTLY ASKED QUESTIONS

What is MIL-C-19978/1?

MIL-C-19978/1 is a CAPACITOR,FIXED,PLASTIC DIELECTR. It is classified as a MRO (MRO_GENERAL).

What parts can replace MIL-C-19978/1?

There are 7 known substitutes for MIL-C-19978/1: 55-0436-3341AA, VCJ1690, 1716257-2 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for MIL-C-19978/1?

MIL-C-19978/1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-006-1329. This indicates validated use in U.S. government and defense supply chains.

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