■Rating
1. Temperature Dependent Characteristics
1. The electrical characteristics of the capacitor can change with temperature.
ꢀ1-1. For capacitors having larger temperature dependency, the capacitance may change with temperature changes. The following actions are recommended in order to ensure suitable capacitance values.
(1) Select a suitable capacitance for the operating temperature range.
(2) The capacitance may change within the rated temperature. When you use a high dielectric constant type capacitor in a circuit that needs a tight (narrow) capacitance tolerance (e.g., a time-constant circuit),
ꢀꢀꢀplease carefully consider the temperature characteristics, and carefully confirm the various characteristics in actual use conditions and the actual system.
[ Example of Temperature Caracteristics X7R(R7) ]
[ Example of Temperature Characteristics X5R(R6) ]
Sample: 0.1μF, Rated Voltage 50VDC
Sample: 22μF, Rated Voltage 4VDC
2. Measurement of Capacitance
1. Measure capacitance with the voltage and frequency specified in the product specifications.
ꢀ1-1. The output voltage of the measuring equipment may decrease occasionally when capacitance is high. Please confirm whether a prescribed measured voltage is impressed to the capacitor.
ꢀ1-2. The capacitance values of high dielectric constant type capacitors change depending on the AC voltage applied. Please consider the AC voltage characteristics when selecting a capacitor to be used in a AC circuit.
GQM0335C2D9R2WB01-01A
10
MURATA [ muRata ]
