MC18A55A3 — CRYSTAL UNIT,QUARTZ

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

MC18A55A3: CRYSTAL UNIT,QUARTZ.

The CRYSTAL UNIT,QUARTZ is a the manufacturer industrial component. Key specifications include material: GLASS COVER HOLDER, body_width: 0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN, overall_width: 0.435 INCHES MAXIMUM IN, body_thickness: 0.144 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN, overall_length: 0.530 INCHES MAXIMUM IN, terminal_length: 1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5955-00-890-9487, 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

MC18A55A3

NSN: 5955-00-890-9487
FSC: 5955 — Oscillators and Piezoelectric Crystals
CAGE: 54331 — MONITOR PRODUCTS CO. INC. DBA MONITOR PRODUCTS CO. INC. (USA)

SPECIFICATIONS

material	GLASS COVER HOLDER
body_width	0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN
overall_width	0.435 INCHES MAXIMUM IN
body_thickness	0.144 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
overall_length	0.530 INCHES MAXIMUM IN
terminal_length	1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN
style_designator	RECTANGULAR BODY, GULL WING
circuit_resonance	SERIES RESONANCE
overall_thickness	0.183 INCHES MAXIMUM IN
terminal_diameter	0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
drive_level_rating	1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
mode_of_oscillation	THIRD OVERTONE AND FIFTH OVERTONE
NSN	5955-00-890-9487

COMPONENT DIAGRAM

KEY FEATURES

•

FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT: -0.005 TO 0.005 AND -0.0010 TO 0.0010

•

TERMINAL DIAMETER: 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN

•

TERMINAL LENGTH: 1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN

•

MODE OF OSCILLATION: THIRD OVERTONE AND FIFTH OVERTONE

•

BODY WIDTH: 0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN

•

EQUIVALENT RESISTANCE VALUE IN OHMS: 35.0 NOMINAL

•

OVERALL THICKNESS: 0.183 INCHES MAXIMUM IN

•

STYLE DESIGNATOR: RECTANGULAR BODY, GULL WING

TECHNICAL CHARACTERISTICS

FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT	-0.005 TO 0.005 AND -0.0010 TO 0.0010
TERMINAL DIAMETER	0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
TERMINAL LENGTH	1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN
MODE OF OSCILLATION	THIRD OVERTONE AND FIFTH OVERTONE
BODY WIDTH	0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN
EQUIVALENT RESISTANCE VALUE IN OHMS	35.0 NOMINAL
OVERALL THICKNESS	0.183 INCHES MAXIMUM IN
STYLE DESIGNATOR	RECTANGULAR BODY, GULL WING
OVERALL LENGTH	0.530 INCHES MAXIMUM IN
OVERALL WIDTH	0.435 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 1

1710130-1Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedDemilitarization required — mutilation + specific procedure

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FREQUENTLY ASKED QUESTIONS

What is MC18A55A3?

MC18A55A3 is a CRYSTAL UNIT,QUARTZ.

What parts can replace MC18A55A3?

There is 1 known substitute for MC18A55A3: 1710130-1. Substitute compatibility should be verified for your specific system.

What is the NSN for MC18A55A3?

MC18A55A3 is cataloged in the U.S. Government catalog under NSN 5955-00-890-9487. This indicates validated use in U.S. government and defense supply chains.

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MC18A55A3 — CRYSTAL UNIT,QUARTZ

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