NSN 5955-01-278-4598, 5955012784598
CRYSTAL UNIT,QUARTZ

Federal Supply Classification: FSC 5955 - Oscillators and Piezoelectric Crystals
National Item Identification Number: NIIN 012784598
Codification Country: United States
Item Name Code: INC 00196
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

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DLMS^® Summary

National Stock Number 5955-01-278-4598

National Stock Number (NSN) 5955-01-278-4598, or NIIN 012784598, (crystal unit,quartz) was assigned May 5, 1988 in the Federal Logistics Information System (FLIS). NIIN 012784598 was cancelled on November 27, 2013, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 5955000824332. This NSN does not replace any other NSNs.

There are 4 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 00196. [AN ITEM WHICH CONSISTS OF A QUARTZ CRYSTAL RESONATOR(S), SUITABLY MOUNTED IN A HOLDER, QUARTZ CRYSTAL.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5955012784598 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

CENTER TO CENTER DISTANCE BETWEEN TERMINALS: (CQBK) 0.478 NOMINAL MILS AND 0.494 NOMINAL CENTIMETERS
OVERALL WIDTH: (ABMK) 0.757 INCHES MAXIMUM
SPECIFIED FREQUENCY: (AEHG) 37.851852 MEGAHERTZ
EQUIVALENT RESISTANCE VALUE IN OHMS: (CRMP) 40.0 NOMINAL
OPERABLE TEMP RANGE: (AEHN) -55.0/+90.0 DEG CELSIUS
STYLE DESIGNATOR: (STYL) OVAL BODY, PIN TERMINALS
SPECIFICATION/STANDARD DATA: (ZZZK) 81349-MIL-C-3098/43 GOVERNMENT SPECIFICATION
TERMINAL DIAMETER: (AEBT) 0.050 INCHES NOMINAL
CONTROLLED REFERENCE TEMP: (AEHM) 75.0 DEG CELSIUS
HOLDER COVER MATERIAL: (AEHS) METAL
TERMINAL LENGTH: (ABJT) 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM
DRIVE LEVEL RATING: (CQYL) 0.8 MILLIWATTS MINIMUM AND 1.2 MILLIWATTS MAXIMUM
BODY WIDTH: (ADAT) 0.725 INCHES MAXIMUM
MODE OF OSCILLATION: (AEHC) THIRD OVERTONE
CIRCUIT RESONANCE: (AEHD) SERIES RESONANCE
FREQUENCY STABILITY IN PERCENT: (AEHL) -0.00025/+0.00025
OPERATING TEMP RANGE: (AFGA) +70.0/+80.0 DEG CELSIUS
OVERALL LENGTH: (ABHP) 1.023 INCHES MAXIMUM
BODY LENGTH: (ADAQ) 0.775 INCHES MAXIMUM
BODY THICKNESS: (ADPR) 0.317 INCHES MAXIMUM
OVERALL THICKNESS: (ADUM) 0.352 INCHES MAXIMUM
SHUNT CAPACITANCE IN PICOFARADS: (AEHF) 7.0 MAXIMUM
FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT: (CRFX) -0.001/+0.001
TEST DATA DOCUMENT: (TEST) 81349-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.).