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Technical Data Sheet
PartsTable / COMPONENT / ERC1187-18
ERC1187-18 ✓ 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 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: 0.142 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN, overall_length: 0.425 INCHES MAXIMUM IN, terminal_length: 1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5955-00-924-7250, 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
ERC1187-18
NSN: 5955-00-924-7250
FSC: 5955
CAGE: 13571 — ELECTRONIC RESEARCH COMPANY (USA)
SPECIFICATIONS
materialGLASS COVER HOLDER
body_width0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN
overall_width0.435 INCHES MAXIMUM IN
body_thickness0.142 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
overall_length0.425 INCHES MAXIMUM IN
terminal_length1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN
style_designatorRECTANGULAR BODY, GULL WING
circuit_resonanceSERIES RESONANCE
overall_thickness0.183 INCHES MAXIMUM IN
terminal_diameter0.020 INCHES NOMINAL IN
drive_level_rating1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
mode_of_oscillationFIFTH OVERTONE AND THIRD OVERTONE
NSN5955-00-924-7250
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CRYSTAL UNIT,QUARTZ TITLE COMPONENT PN ERC1187-18 MFR CRYSTAL UNIT,QUARTZ
KEY FEATURES
•
TERMINAL DIAMETER: 0.020 INCHES NOMINAL IN
•
MATERIAL: GLASS COVER HOLDER
•
TERMINAL LENGTH: 1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: RECTANGULAR BODY, GULL WING
•
FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT: -0.0025 TO 0.0025 AND -0.0045 TO 0.0045
•
DRIVE LEVEL RATING: 1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
•
CIRCUIT RESONANCE: SERIES RESONANCE
•
BODY WIDTH: 0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
TERMINAL DIAMETER0.020 INCHES NOMINAL IN
MATERIALGLASS COVER HOLDER
TERMINAL LENGTH1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN
STYLE DESIGNATORRECTANGULAR BODY, GULL WING
FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT-0.0025 TO 0.0025 AND -0.0045 TO 0.0045
DRIVE LEVEL RATING1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
CIRCUIT RESONANCESERIES RESONANCE
BODY WIDTH0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN
BODY THICKNESS0.142 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
OVERALL WIDTH0.435 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
66918Interchangeable
interchangeable cross-reference
interchangeable
88503Interchangeable
interchangeable cross-reference
interchangeable
X1499Interchangeable
interchangeable cross-reference
interchangeable
203LL2Interchangeable
interchangeable cross-reference
interchangeable
DP1-5900-1Interchangeable
interchangeable cross-reference
interchangeable
H3WSP48.9250MHZInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ERC1187-18?
ERC1187-18 is a CRYSTAL UNIT,QUARTZ.
What parts can replace ERC1187-18?
There are 6 known substitutes for ERC1187-18: 66918, 88503, X1499 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ERC1187-18?
ERC1187-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5955-00-924-7250. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026