PartsTable
Technical Data Sheet
Download PDF

M-3666 — CAPACITOR,FIXED,ELECTROLYTIC

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

M-3666: CAPACITOR,FIXED,ELECTROLYTIC.

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 body_width: 2.516 INCHES MINIMUM AND 2.594 INCHES MAXIMUM IN, body_height: 2.937 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN, body_length: 3.297 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN, rating_method: ELECTRICAL AND WINDING TURNS SINGLE COMPONENT ALL WINDING, turn_quantity: 169 SINGLE COMPONENT ALL WINDING, inclosure_type: FULLY INCLOSED. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-660-7933, 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
M-3666
NSN: 5950-00-660-7933
FSC: 5950 — Coils and Transformers
CAGE: 00348 — MICROTRAN CO INC (USA)
SPECIFICATIONS
body_width2.516 INCHES MINIMUM AND 2.594 INCHES MAXIMUM IN
body_height2.937 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN
body_length3.297 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
rating_methodELECTRICAL AND WINDING TURNS SINGLE COMPONENT ALL WINDING
turn_quantity169 SINGLE COMPONENT ALL WINDING
inclosure_typeFULLY INCLOSED
inductance_typeFIXED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating800.0 HERTZ NOMINAL SINGLE COMPONENT
winding_quantity2 SINGLE COMPONENT
features_providedTINNED WIRE LEADS
inductance_rating1.40 HENRY MINIMUM SINGLE COMPONENT ALL WINDING
NSN5950-00-660-7933
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN M-3666 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP
•
INCLOSURE TYPE: FULLY INCLOSED
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 2.359 INCHES MINIMUM AND 2.391 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
TURN QUANTITY: 169 SINGLE COMPONENT ALL WINDING
•
MOUNTING METHOD: THREADED HOLE(S) SINGLE GROUP
•
INDUCTANCE RATING: 1.40 HENRY MINIMUM SINGLE COMPONENT ALL WINDING
•
BODY WIDTH: 2.516 INCHES MINIMUM AND 2.594 INCHES MAXIMUM IN
•
BODY HEIGHT: 2.937 INCHES MINIMUM AND 3.063 INCHES MAXIMUM 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
MOUNTING FACILITY QUANTITY4 SINGLE GROUP
INCLOSURE TYPEFULLY INCLOSED
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH2.359 INCHES MINIMUM AND 2.391 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
TURN QUANTITY169 SINGLE COMPONENT ALL WINDING
MOUNTING METHODTHREADED HOLE(S) SINGLE GROUP
INDUCTANCE RATING1.40 HENRY MINIMUM SINGLE COMPONENT ALL WINDING
BODY WIDTH2.516 INCHES MINIMUM AND 2.594 INCHES MAXIMUM IN
BODY HEIGHT2.937 INCHES MINIMUM AND 3.063 INCHES MAXIMUM IN
WINDING CONDUCTOR SIZE0.02010 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT ALL WINDING IN
FEATURES PROVIDEDTINNED WIRE LEADS
SUBSTITUTES & CROSS-REFERENCES 4
1006951Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
W-2930Reference document
Same NSN cross-reference
Reference document — Secondary reference
W-11273Reference document
Same NSN cross-reference
Reference document — Secondary reference
436251Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy M-3666?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is M-3666?
M-3666 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace M-3666?
There are 4 known substitutes for M-3666: 1006951, W-2930, W-11273 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M-3666?
M-3666 is cataloged in the U.S. Government catalog under NSN 5950-00-660-7933. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — M-3666

✓ 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.