PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CR18/U11M45000Crystal Unit,quartz

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5955-00-935-0141 · FSC 5955 · No Item Name Available
Verified by PartsTable
NSN 5955-00-935-0141 — this item is cataloged by the U.S. Government under National Stock Number 5955-00-935-0141. Primary manufacturer part number: CR18/U11M45000.
Features
  • Crystal Unit,quartz — FSC 5955
  • Overall Thickness: 0.352 INCHES MAXIMUM IN
  • Load Capacitance in Picofarads: 31.5 MINIMUM AND 32.5 MAXIMUM
  • Operating Temp Range: -55.0 TO 105.0 CELSIUS DEGC
  • Drive Level Rating: 8.0 MILLIWATTS MINIMUM AND 12.0 MILLIWATTS MAXIMUM
  • Test Data Document: 81349-MILC3098 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005
  • Equivalent Resistance Value in Ohms: 410.0 MAXIMUM
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-935-0141, is classified within Federal Supply Class 5955 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5955-00-935-0141
Primary Part NumberCR18/U11M45000
Item NameCrystal Unit,quartz
FSC / FSG5955 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Overall Thickness0.352 INCHES MAXIMUM IN
Load Capacitance in Picofarads31.5 MINIMUM AND 32.5 MAXIMUM
Operating Temp Range-55.0 TO 105.0 CELSIUS DEGC
Drive Level Rating8.0 MILLIWATTS MINIMUM AND 12.0 MILLIWATTS MAXIMUM
Test Data Document81349-MILC3098 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Frequency Tolerance for Operating Temp in Percent-0.005 TO 0.005
Equivalent Resistance Value in Ohms410.0 MAXIMUM
Style DesignatorOVAL BODY, PIN TERMINALS
Specification/standard Data81349-MILC3098/3 GOVERNMENT SPECIFICATION
Mode of OscillationFUNDAMENTAL
Center to Center Distance Between Terminals0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
Body Width0.725 INCHES MAXIMUM IN
Terminal Length0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
Body Length0.775 INCHES MAXIMUM IN
Terminal Diameter0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
Shunt Capacitance in Picofarads7.0 MAXIMUM
Circuit ResonanceANTIRESONANCE
Body Thickness0.317 INCHES MAXIMUM IN
Specified Frequency1.145 MEGAHERTZ
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2990-00-238-5449190-9135 INTERCHANGEABLE
Muffler,exhaust
Stemco Inc Sub of Coltec Industries Inc
5130-00-987-7050 INTERCHANGEABLE
Bit,wire Wrapping Tool
2540-01-036-3827 INTERCHANGEABLE
Shaft,front
7520-01-481-746165800 INTERCHANGEABLE
Pen,ball-Point
Sanford Corp
5310-01-614-672937006 INTERCHANGEABLE
Nut,self-Locking,hexagon
Fastenal Co Inc
Cross-Reference Index
Part NumberManufacturer
CR18/U11M45000 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-3098/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
37006 Thales Defense & Security Inc Dba Thales Communications Inc (USA)
MILC3098-3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
CR-18A/U1.145000MHZ Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
2990-00-238-5449INTERCHANGEABLE
MUFFLER,EXHAUST
190-9135
5130-00-987-7050INTERCHANGEABLE
BIT,WIRE WRAPPING TOOL
2540-01-036-3827INTERCHANGEABLE
SHAFT,FRONT
7520-01-481-7461INTERCHANGEABLE
PEN,BALL-POINT
65800
5310-01-614-6729INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
37006

Frequently Asked Questions

What is NSN 5955-00-935-0141?

NSN 5955-00-935-0141 is a Crystal Unit,quartz, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5955 (No Item Name Available). Status: active.

What are the part numbers for NSN 5955-00-935-0141?

NSN 5955-00-935-0141 has 5 cross-referenced part numbers: CR18/U11M45000 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-3098/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 37006 (Thales Defense & Security Inc Dba Thales Communications Inc), MILC3098-3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), CR-18A/U1.145000MHZ (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5955-00-935-0141?

There are 5 known substitutes for 5955-00-935-0141: 2990-00-238-5449, 5130-00-987-7050, 2540-01-036-3827 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CR18/U11M45000?

Key specifications for CR18/U11M45000: Overall Thickness: 0.352 INCHES MAXIMUM IN; Load Capacitance in Picofarads: 31.5 MINIMUM AND 32.5 MAXIMUM; Operating Temp Range: -55.0 TO 105.0 CELSIUS DEGC; Drive Level Rating: 8.0 MILLIWATTS MINIMUM AND 12.0 MILLIWATTS MAXIMUM. 21 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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