PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CR133/U103M8500Crystal Unit,quartz

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5955-01-261-7748 · FSC 5955 · No Item Name Available
Verified by PartsTable
NSN 5955-01-261-7748 — this item is cataloged by the U.S. Government under National Stock Number 5955-01-261-7748. Primary manufacturer part number: CR133/U103M8500.
Features
  • Crystal Unit,quartz — FSC 5955
  • Body Width: 0.402 INCHES MAXIMUM IN
  • Terminal Length: 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
  • Terminal Diameter: 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
  • Body Length: 0.530 INCHES MAXIMUM IN
  • Operating Temp Range: -55.0 TO 150.0 CELSIUS DEGC
  • Drive Level Rating: 1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
  • Equivalent Resistance Value in Ohms: 20.0 MINIMUM AND 60.0 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 5955-01-261-7748, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5955-01-261-7748
Primary Part NumberCR133/U103M8500
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
StatusCANCELLED
Body Width0.402 INCHES MAXIMUM IN
Terminal Length0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
Terminal Diameter0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN
Body Length0.530 INCHES MAXIMUM IN
Operating Temp Range-55.0 TO 150.0 CELSIUS DEGC
Drive Level Rating1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
Equivalent Resistance Value in Ohms20.0 MINIMUM AND 60.0 MAXIMUM
Frequency Tolerance for Operating Temp in Percent-0.006 TO 0.006
Center to Center Distance Between Terminals0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
Test Data Document81349-MIL-C-3098 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.).
Style DesignatorOVAL BODY, PIN TERMINALS
Specification/standard Data81349-MIL-C-3098/112 GOVERNMENT SPECIFICATION
Shunt Capacitance in Picofarads5.5 MINIMUM AND 7.5 MAXIMUM
Overall Thickness0.183 INCHES MAXIMUM IN
Specified Frequency103.850 MEGAHERTZ
Body Thickness0.150 INCHES MAXIMUM IN
Mode of OscillationFIFTH OVERTONE
Circuit ResonanceSERIES RESONANCE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5955-00-928-1521 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-179-8636 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-192-0001 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1727 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1728 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1729 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-221-1731 INTERCHANGEABLE
Crystal Unit,quartz
5955-01-261-7749 INTERCHANGEABLE
Crystal Unit,quartz
Cross-Reference Index
Part NumberManufacturer
CR133/U103M8500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-3098/112 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5955-00-928-1521INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-179-8636INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-192-0001INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1727INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1728INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1729INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-221-1731INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
5955-01-261-7749INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ

Frequently Asked Questions

What is NSN 5955-01-261-7748?

NSN 5955-01-261-7748 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: cancelled.

What are the part numbers for NSN 5955-01-261-7748?

NSN 5955-01-261-7748 has 2 cross-referenced part numbers: CR133/U103M8500 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-3098/112 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5955-01-261-7748?

There are 8 known substitutes for 5955-01-261-7748: 5955-00-928-1521, 5955-01-179-8636, 5955-01-192-0001 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CR133/U103M8500?

Key specifications for CR133/U103M8500: Body Width: 0.402 INCHES MAXIMUM IN; Terminal Length: 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN; Terminal Diameter: 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN; Body Length: 0.530 INCHES MAXIMUM IN. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5955-01-261-7748 still in active supply?

NSN 5955-01-261-7748 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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