661 — CAPACITOR,FIXED,ELECTROLYTIC

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

661: 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 material: STEEL BLADE, tip_type: SQUARE, shank_shape: ROUND, blade_length: 4.000 INCHES NOMINAL IN, overall_length: 7.750 INCHES NOMINAL IN, special_features: CUSHION GRIP. This part is cataloged in the U.S.

Government catalog under NSN 5955-00-008-4706, 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→ 661

NSN: 5955-00-008-4706
NIINs: 000084706, 000806410, 001000453, 001000669, 001117220, 001182502, 001655605, 002405541, 002883845, 004932987, 005519519, 006632212, 007756831, 008579221, 009088747, 009678973, 009783510, 010187273, 010442465, 010475970, 010502471, 011926879, 012462509, 013311764, 014187496, 014588568, 015933205
FSC: 5955 — Oscillators and Piezoelectric Crystals
CAGE: 00136 — MICROSEMI CORP. - HIGH PERFORMANCE TIMING DBA VECTRON INTERNATIONAL- CANCELLED (USA)

SPECIFICATIONS

material	STEEL BLADE
tip_type	SQUARE
shank_shape	ROUND
blade_length	4.000 INCHES NOMINAL IN
overall_length	7.750 INCHES NOMINAL IN
special_features	CUSHION GRIP
tip_size_designation	1
NSN	5955-00-008-4706

COMPONENT DIAGRAM

KEY FEATURES

•

FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT: -0.005 TO 0.005

•

TERMINAL DIAMETER: 0.018 INCHES NOMINAL IN

•

OVERALL DIAMETER: 0.353 INCHES NOMINAL IN

•

TERMINAL LENGTH: 0.500 INCHES NOMINAL IN

•

MODE OF OSCILLATION: THIRD OVERTONE

•

EQUIVALENT RESISTANCE VALUE IN OHMS: 50.0 NOMINAL

•

STYLE DESIGNATOR: HAT TYPE, 3 WIRE LEADS

•

DIAMETER: 0.320 INCHES NOMINAL 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

FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT	-0.005 TO 0.005
TERMINAL DIAMETER	0.018 INCHES NOMINAL IN
OVERALL DIAMETER	0.353 INCHES NOMINAL IN
TERMINAL LENGTH	0.500 INCHES NOMINAL IN
MODE OF OSCILLATION	THIRD OVERTONE
EQUIVALENT RESISTANCE VALUE IN OHMS	50.0 NOMINAL
STYLE DESIGNATOR	HAT TYPE, 3 WIRE LEADS
DIAMETER	0.320 INCHES NOMINAL IN
OVERALL LENGTH	0.250 INCHES NOMINAL IN
DRIVE LEVEL RATING	2.0 MILLIWATTS NOMINAL

OTHER ITEMS IN FSC 5955 — Oscillators and Piezoelectric Crystals

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5955-00-001-1622 5955-00-001-2933 5955-00-001-2977 5955-00-001-3014 5955-00-001-3242 5955-00-001-3243 5955-00-001-3244 5955-00-001-3328

SUBSTITUTES & CROSS-REFERENCES 1

535728-1Same 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)Demilitarization required — mutilation + specific procedure

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FREQUENTLY ASKED QUESTIONS

What is 661?

661 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).

What parts can replace 661?

There is 1 known substitute for 661: 535728-1. Substitute compatibility should be verified for your specific system.

What is the NSN for 661?

661 is cataloged in the U.S. Government catalog under NSN 5955-00-008-4706. This indicates validated use in U.S. government and defense supply chains.

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661 — CAPACITOR,FIXED,ELECTROLYTIC

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