MC-18A — CRYSTAL UNIT,QUARTZ

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

MC-18A: CRYSTAL UNIT,QUARTZ.

The CRYSTAL UNIT,QUARTZ is a the manufacturer industrial component. Key specifications include body_width: 0.402 INCHES MAXIMUM IN, overall_width: 0.435 INCHES MAXIMUM IN, body_thickness: 0.150 INCHES MAXIMUM IN, overall_length: 0.530 INCHES MAXIMUM IN, terminal_length: 1.500 INCHES MINIMUM IN, style_designator: OVAL BODY, WIRE LEADS. This part is cataloged in the U.S.

Government catalog under NSN 5955-01-014-7957, 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

MC-18A

NSN: 5955-01-014-7957
FSC: 5955 — Oscillators and Piezoelectric Crystals
CAGE: 54331 — MONITOR PRODUCTS CO. INC. DBA MONITOR PRODUCTS CO. INC. (USA)

SPECIFICATIONS

body_width	0.402 INCHES MAXIMUM IN
overall_width	0.435 INCHES MAXIMUM IN
body_thickness	0.150 INCHES MAXIMUM IN
overall_length	0.530 INCHES MAXIMUM IN
terminal_length	1.500 INCHES MINIMUM IN
style_designator	OVAL BODY, WIRE LEADS
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	2.0 MILLIWATTS NOMINAL
mode_of_oscillation	FIFTH OVERTONE
specified_frequency	90.000 MEGAHERTZ
NSN	5955-01-014-7957

COMPONENT DIAGRAM

KEY FEATURES

•

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

•

TERMINAL DIAMETER: 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN

•

TERMINAL LENGTH: 1.500 INCHES MINIMUM IN

•

MODE OF OSCILLATION: FIFTH OVERTONE

•

BODY WIDTH: 0.402 INCHES MAXIMUM IN

•

EQUIVALENT RESISTANCE VALUE IN OHMS: 40.0 NOMINAL

•

OVERALL THICKNESS: 0.183 INCHES MAXIMUM IN

•

STYLE DESIGNATOR: OVAL BODY, WIRE LEADS

TECHNICAL CHARACTERISTICS

FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT	-0.005 TO 0.005
TERMINAL DIAMETER	0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
TERMINAL LENGTH	1.500 INCHES MINIMUM IN
MODE OF OSCILLATION	FIFTH OVERTONE
BODY WIDTH	0.402 INCHES MAXIMUM IN
EQUIVALENT RESISTANCE VALUE IN OHMS	40.0 NOMINAL
OVERALL THICKNESS	0.183 INCHES MAXIMUM IN
STYLE DESIGNATOR	OVAL BODY, WIRE LEADS
OVERALL LENGTH	0.530 INCHES MAXIMUM IN
OVERALL WIDTH	0.435 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 3

W-6Reference document

Same NSN cross-reference

Reference document — Secondary reference

122850Reference document

Same NSN cross-reference

Reference document — Secondary reference

HAReference document

Same NSN cross-reference

Reference document — Secondary reference

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 MC-18A?

MC-18A is a CRYSTAL UNIT,QUARTZ.

What parts can replace MC-18A?

There are 3 known substitutes for MC-18A: W-6, 122850, HA. Substitute compatibility should be verified for your specific system.

What is the NSN for MC-18A?

MC-18A is cataloged in the U.S. Government catalog under NSN 5955-01-014-7957. This indicates validated use in U.S. government and defense supply chains.

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MC-18A — CRYSTAL UNIT,QUARTZ

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