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Class 2 capacitors are labeled based on the change in capacitance over the temperature range. The most generally used classification relies on the EIA RS-198 customary and energy medicine certification online makes use of a three-digit code. 125 °C with a capacitance change of at most ±15%. If you loved this post and you would love to receive details relating to inlight therapy frequencies please visit our webpage. The IEC/EN 60384 -9/22 commonplace uses another two-digit-code. Code for capacitance change Max. 10/−15% 1 −55 … 20/−30% 2 −55 … 20/−40% 3 −40 … 22/−70% four −25 … Generally it is feasible to translate the EIA code into the IEC/EN code. Slight translation errors occur, however usually are tolerable. As a result of class 2 ceramic capacitors have decrease capacitance accuracy and stability, inlight therapy frequencies they require larger tolerance.