Ceramic Temperature Coefficient

The second character gives the multiplier of the temperature coefficient.

Ceramic temperature coefficient.

Temperature compensating type multilayer ceramic capacitors have a small temperature coefficient of electrostatic capacitance max. In 1 k or k 1. Sometimes this coefficient is called the dielectric type each letter of the designation has a meaning as shown these charts. Ceramic temperature coefficients specify how much a mlcc s capacitance will change with applied temperature.

C0g x7r x5r u2j etc. The first letter gives the significant figure of the change in capacitance over temperature temperature coefficient α in ppm k. 30 ppm c 25 c reference within the temperature range of 55 c to 125 c. That is to say these are c0g characteristics products with a small temperature variance width.

Technical data coefficient of thermal expansion. The meaning of those letters was created the electronic industries alliance standard number 198 which. Fine ceramics typically have a low coefficient of thermal expansion which indicates their expansion ratio due to changes in temperature. Here α has the dimension of an inverse temperature and can be expressed e g.

Very shortly after an engineer s first exposure to mlccs they are quickly confronted with an alphabet soup of letters and numbers. The coefficient ratio of thermal expansion indicates how much a material expands per 1 2 2 rise in temperature. Fine ceramics also known as advanced ceramics have low coefficients of thermal expansion less than half those of stainless steels. The eia rs 198 standard codes ceramic class 1 capacitors with a three character code that indicates temperature coefficient.

Popular class 2 ceramic dielectrics include x7r which as a temperature range of 55 to 125 c with a δc c0 of 15 y5v which as a temperature range of 30 to 85 c with a δc c0 of 22 82 and z5u which has a temperature range of 10 to 85 c and a δc c0 22 56. Class 1 ceramic temperature coefficient.