PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 12AM
12AM ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The CRYSTAL UNIT,QUARTZ is a the manufacturer industrial component. Key specifications include body_width: 0.725 INCHES NOMINAL IN, body_length: 0.750 INCHES NOMINAL IN, mounting_type: DESK, overall_width: 0.757 INCHES NOMINAL IN, body_thickness: 0.317 INCHES NOMINAL IN, overall_length: 0.998 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5955-00-078-4602, 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
12AM
NSN: 5955-00-078-4602
FSC: 5955
CAGE: 10241 — TELEPHONE SYSTEMS/COMMUNICATIONS (USA)
SPECIFICATIONS
body_width0.725 INCHES NOMINAL IN
body_length0.750 INCHES NOMINAL IN
mounting_typeDESK
overall_width0.757 INCHES NOMINAL IN
body_thickness0.317 INCHES NOMINAL IN
overall_length0.998 INCHES NOMINAL IN
terminal_length0.248 INCHES NOMINAL IN
style_designatorOVAL BODY, PIN TERMINALS
overall_thickness0.352 INCHES NOMINAL IN
terminal_diameter0.050 INCHES NOMINAL IN
recording_positionHORIZONTAL
specified_frequency138.720 KILOHERTZ
NSN5955-00-078-4602
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CRYSTAL UNIT,QUARTZ TITLE COMPONENT PN 12AM MFR CRYSTAL UNIT,QUARTZ
KEY FEATURES
•
SPECIFIED FREQUENCY: 138.720 KILOHERTZ
•
STYLE DESIGNATOR: OVAL BODY, PIN TERMINALS
•
CENTER TO CENTER DISTANCE BETWEEN TERMINALS: 0.486 INCHES NOMINAL IN
•
BODY WIDTH: 0.725 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.352 INCHES NOMINAL IN
•
BODY LENGTH: 0.750 INCHES NOMINAL IN
•
FSC APPLICATION DATA: PIEZOELECTRIC CRYSTALS
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFIED FREQUENCY138.720 KILOHERTZ
STYLE DESIGNATOROVAL BODY, PIN TERMINALS
OVERALL LENGTH0.998 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN TERMINALS0.486 INCHES NOMINAL IN
BODY WIDTH0.725 INCHES NOMINAL IN
OVERALL THICKNESS0.352 INCHES NOMINAL IN
BODY LENGTH0.750 INCHES NOMINAL IN
FSC APPLICATION DATAPIEZOELECTRIC CRYSTALS
OVERALL WIDTH0.757 INCHES NOMINAL IN
TERMINAL DIAMETER0.050 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
12AMInterchangeable
interchangeable cross-reference
interchangeable
12AFInterchangeable
interchangeable cross-reference
interchangeable
2500-5Interchangeable
interchangeable cross-reference
interchangeable
SM-C-357608-22Interchangeable
Same NIIN cross-reference
interchangeable
XL10001-12AM-21 25CPSInterchangeable
Same NIIN cross-reference
interchangeable
2001-138-720KCInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12AM?
12AM is a CRYSTAL UNIT,QUARTZ.
What parts can replace 12AM?
There are 7 known substitutes for 12AM: 12AM, 12AF, 2500-5 and 4 more. Substitute compatibility should be verified for your specific system.
Is 12AM still available?
12AM is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026