Cheap And Discounts 20/50/100/200/500Pcs BTB04-600B BTB04 Triac 4A/600V TO-220 DIP Thyristor Large Chip Wholesale. Buy Directly From Merchant Emind Electronic Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.