Cheap And Discounts Free shipping 20pcs 1.5SMC550A 1.5SMC550CA 1.5SMC600A 1.5SMC600CA UNI/BI 550v 600v 1500W TVS DIODES SMC/DO-214AB Wholesale. Buy Directly From Merchant Shop1879090 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.