BV (Vr. m. s. ) High isolation voltage High VCEO (80 V MIN. ) Single transistor High isolation voltage High CTR Darlingtontransistor High isolation voltage A. C. input High VCEO (80 V MIN. ) Single transistor High isolation voltage A. C. input High CTR Darlingtontransistor High isolation voltage Large input current Single transistor High isolation voltage A. C. input Large input current Single transistor High isolation voltage High VCEO (300 V MIN. ) High CTR Darlingtontransitor High isolation voltage Hi.