1. AC input 2. High isolation voltage between input and output (Viso (rms) :5kV) 3. Compact dual-in-line package PC824 (2-channel type) PC844 (4-channel type) 4. Current transfer ratio CTR:MIN. 20% at IF=±1mA, VCE=5V 5. Recognized by UL, file No. E64380 AC Input Photocoupler ❇ Lead forming type (I.