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NSN: 5955-00-001-2977
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Cross Reference

These part numbers have the same form, fit, and function of cr1du
Item Number Cage
CR-1D/U6.370000MHZ 81349
MILC3098-76 81349
CR1DU 13571

Characteristic Codes

CR1DU spec. code meanings
Code Translation
ABHP The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
ABJT A measurement of the longest dimension of a terminal, in distinction from width.
ABMK An overall measurement taken at right angles to the length of an item, in distinction from thickness.
ADAQ A measurement of the longest dimension of the body, in distinction from width.
ADAT A measurement taken at right angles to the length of the body, in distinction from thickness.
ADPR A measurement of the smallest dimension of a body, in distinction from length or width.
ADUM An overall measurement of the smallest dimension of an item, in distinction from length or width.
AEBT The length of a straight line which passes through the center of a terminal, and terminates at the circumference.
AEHC The mode of frequency at which the device is designed to operate.
AEHD The condition existing when the frequency or vibration equals the natural frequency.
AEHE The amount of electrical capacitance under a load condition, required for normal operation in a circuit, expressed in picofarads.
AEHG The frequency at which the item is designed to operate under specified conditions.
AEHS The element, compound, or mixture of which the holder cover is fabricated.
AFGA The minimum and maximum limits of temperature at which the item is rated for operation.
CQYL The drive level at which the item is designed to operate.
CRFX The permissible frequency deviation within the operating temperature range, expressed in percent.
CRMP The equivalent (effective) resistance for which the item is rated, expressed in ohms.
STYL The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
TEST The specification, standard, drawing, or similar instrument that specifies environmental and performance requirements or test conditions under which an item is tested and establishes acceptable limits within which the item must conform identified by an alphabetic and/or numeric reference number. includes the commercial and government entity (cage) code of the entity controlling the instrument.


Description: Quartz Crystal Unit
Mfr. Cage 13571


Length: 1-15/16"

ABHP Overall Length
1.937 inches maximum
ABJT Terminal Length
From 0.625" and 0.655"
ABMK Overall Width
1.170 inches maximum
ADAQ Body Length
1.282 inches maximum
ADAT Body Width
1.125 inches maximum
ADPR Body Thickness
0.411 inches maximum
ADUM Overall Thickness
0.460 inches maximum
AEBT Terminal Diameter
From 0.048" and 0.052"
AEHC Mode Of Oscillation
AEHD Circuit Resonance
AEHE Load Capacitance In Picofarads
From 34.5 and 35.5
AEHG Specified Frequency
6.370 megahertz
AEHS Holder Cover Material
AFGA Operating Temp Range
-55.0 to 90.0 deg celsius
CQBK Center To Center Distance Between Terminals
From 0.490" and 0.510 centimeters
CQYL Drive Level Rating
From 27.0 milliwatts and 33.0 milliwatts
CRFX Frequency Tolerance For Operating Temp In Percent
CRMP Equivalent Resistance Value In Ohms
STYL Style Designator
Oval body, pin terminals
TEST 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", "", etc.).

Technical Definition

Crystal Unit, Quartz, also referenced with federal logistics item name code 00196 - An item which consists of a quartz crystal resonator(s), suitably mounted in a holder, quartz crystal.
National Stock Number (NSN): 5955-00-001-2977

Last Modified: 02/14/2017