1) Darlington connection for high DC current gain. 2) Built-in resistor between base and emitter. 3) Built-in damper diode. 4) Complements the 2SD2195 / 2SD1980. zAbsolute maximum ratings (Ta = 25°C) Parameter Symbol Limits Collector-base voltage Collector-emitter voltage VCBO VCEO −100 −100 .