28900-4 — CAPACITOR,VARIABLE,AIR DIELECTRI

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

28900-4: CAPACITOR,VARIABLE,AIR DIELECTRI.

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include body_style: PLATE-MESHING, shaft_type: ROUND SINGLE SHAFT, body_length: 3.141 INCHES NOMINAL IN, shaft_length: 1.062 INCHES NOMINAL SINGLE SHAFT IN, overall_width: 1.562 INCHES NOMINAL IN, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING. This part is cataloged in the U.S.

Government catalog under NSN 5910-00-045-9249, 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→ 28900-4

NSN: 5910-00-045-9249
NIINs: 000459249, 000511129, 015523577, 015728167, 016315141
FSC: 5910 — Capacitors
CAGE: 57283 — CAYWOOD ELECTRONICS INC DBA JAMES MILLEN ELECTRONICS (USA)

SPECIFICATIONS

body_style	PLATE-MESHING
shaft_type	ROUND SINGLE SHAFT
body_length	3.141 INCHES NOMINAL IN
shaft_length	1.062 INCHES NOMINAL SINGLE SHAFT IN
overall_width	1.562 INCHES NOMINAL IN
rating_method	ELECTRICAL SINGLE COMPONENT SINGLE WINDING
coil_form_type	SOLID SINGLE COMPONENT
inclosure_type	UNINCLOSED
overall_height	1.562 INCHES NOMINAL IN
overall_length	4.203 INCHES NOMINAL IN
quality_factor	60 MINIMUM SINGLE COMPONENT SINGLE WINDING
shaft_diameter	0.2495 INCHES NOMINAL SINGLE SHAFT IN
NSN	5910-00-045-9249

COMPONENT DIAGRAM

KEY FEATURES

•

SHAFT TYPE: ROUND SINGLE SHAFT

•

MOUNTING FACILITY TYPE AND QUANTITY: 4 THREADED HOLE(S)

•

SHAFT DIAMETER: 0.2495 INCHES NOMINAL SINGLE SHAFT IN

•

INCLOSURE TYPE: UNINCLOSED

•

BODY STYLE: PLATE-MESHING

•

ADJUSTMENT DEVICE ROTATION: 180.0 DEGREES NOMINAL CLOCKWISE

•

NONDERATED OPERATING TEMP: -54.0 CELSIUS MINIMUM AND 90.0 CELSIUS MAXIMUM DEGC

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

SHAFT TYPE	ROUND SINGLE SHAFT
MOUNTING FACILITY TYPE AND QUANTITY	4 THREADED HOLE(S)
OVERALL HEIGHT	1.562 INCHES NOMINAL IN
SHAFT DIAMETER	0.2495 INCHES NOMINAL SINGLE SHAFT IN
INCLOSURE TYPE	UNINCLOSED
BODY STYLE	PLATE-MESHING
ADJUSTMENT DEVICE ROTATION	180.0 DEGREES NOMINAL CLOCKWISE
NONDERATED OPERATING TEMP	-54.0 CELSIUS MINIMUM AND 90.0 CELSIUS MAXIMUM DEGC
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
INDIVIDUAL SECTION QUANTITY	2

SUBSTITUTES & CROSS-REFERENCES 1

A39955-2Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 28900-4?

28900-4 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).

What parts can replace 28900-4?

There is 1 known substitute for 28900-4: A39955-2. Substitute compatibility should be verified for your specific system.

What is the NSN for 28900-4?

28900-4 is cataloged in the U.S. Government catalog under NSN 5910-00-045-9249. This indicates validated use in U.S. government and defense supply chains.

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28900-4 — CAPACITOR,VARIABLE,AIR DIELECTRI

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