Cheap And Discounts 10 pieces/batch CTMICRO CT1019 CT1019(V)(T1)-W Transistor output optocoupler Surface mount optocoupler LSOP4 Wholesale. Buy Directly From Merchant Fire Dot Electronic Components Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.