10x 1010-817 COSMO Electronics New $11.99 in Stock Today 10/units Total. COSMO Electronics 1010-817 PHOTOTRANSISTOR PHOTOCOUPLER 4 PIN K1010 Series consist of an infrared emitting diode optically coupled to a phototransistor detector 4-pin DIP package wide-lead spacing K1010 A 80 ~ 160 CTR % Current Transfer Ratio System appliances Measuring instruments Computer terminals Programmable controllers Medical instruments Physical and chemical equipment Signal transmission between circuits of different potentials and impedances Long creepage distance type 4-Pin Dip package Make Offer on a Larger Quantity Box 379