Cheap And Discounts 10~500Pcs BT137B-600D BT137B-600E BT137B-600F BT137B-800D BT137B-800E BT137B-800F Triac 8A 600V/800V TO-263 SMD Thyristor Wholesale. Buy Directly From Merchant EMIND Electronic Module Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.