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Electrical characteristics of MOSFETs (Dynamic Characteristics Ciss/Crss/Coss)
Capacitance (C iss/C rss/C oss)
In a MOSFET, the gate is insulated by a thin silicon oxide. Therefore, a power MOSFET has capacitances between the gate-drain, gate-source and drain-source terminals as shown in the figure below.
Ciss is the input capacitance, Crss is the reverse transfer capacitance, and Coss is the output capacitance. Capacitances affect the switching performance of a MOSFET.
Data sheet description
VDS = 20 V, VGS = 0 V, f = 1 MHz
Electrical Characteristics: Power MOSFET Application Notes (PDF:1,092KB)