Vishay, 4N37 DC Input Transistor Output Optocoupler, Through Hole, 6-Pin DIP

VO617A and VO618A series provides up to 5300 Vrms of voltage Isolation.
VO615A, VOL617A and VOL628A series provides up to 5000 Vrms of voltage Isolation.
VOM617A and VOM618A series provides up to 3750 Vrms of voltage Isolation.
VO617A, VO618A, VOL617A, VOL628A, VOM617A, and VOM618A Applications include Isolation in AC adapters, switch mode power supplies, programmable logic controllers, Industrial controls, telecom systems, smart meters, office equipment, power on Internet and solar.
Optocouplers VO615A, VO617A, VO618A, VOL617A, VOL628A, VOM617A, and VOM618A have an operating temperature up to 110 degrees.

Optocouplers, Vishay Semiconductor