Key ratings for BOM fit
The H11A617B: Single-channel transistor output optoisolator with a 5300Vrms isolation rating — sufficient for reinforced insulation in mains-referenced circuits per IEC 60950-1 and IEC 62368-1. Current transfer ratio (CTR) is guaranteed at 63% minimum to 125% maximum when forward current is 10 mA — this spread means the same part works across a range of logic thresholds without rebiasing the input LED.
Housed in a 4-DIP (0.300", 7.62mm) through-hole package with a 2.54 mm pin pitch — a standard DIP footprint that mates with breadboards, sockets, or solders directly into a PCB. Operating temperature range -55°C to 100°C covers industrial and extended-commercial environments without derating.