Cheap And Discounts SFH610A-2 SFH610A-3 Original 50mA 5.3kV 1.25V DIP-4P OPTOISOLTR 1CH TRANS Phototriode DC Transistor Output Optocoupler SFH610A Wholesale. Buy Directly From Merchant Capacitance resistance Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.