InterQuip Electronics | Technical info | Crystals

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Description

Technical Info - Crystals

T	A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

TAPE AND REEL

Refers to the packaging method used to accommodate automated pick & place equipment.

TEST SET

A device used to measure the frequency and resistance characteristics of a quartz crystal unit. Often called a "crystal impedance meter", abbreviated as "C.I.M.".

TRIM SENSITIVITY

A measure of the incremental fractional frequency change for an incremental change in the value of load capacitance. Trim sensitivity (S) is expressed in terms of PPM/pF and is calculated with the following equation: S=(C1*1,000,000)/2*CF2, where CF is the sum of the shunt capacitance CO, and the load capacitance CL.

TURNOVER TEMPERATURE

The temperature at which the frequency is at the top of the parabolic curve.

TWINNING

A condition existing within a quartz stone wherein the optic and/or the electric axis suddenly reverse its natural order of polarity.