BT138E Triac Posted 6th July 2015 by by Customer matched zone "Worldwide" “5″ rubber ring (White only)” has been added to your basket. View basket £3.93 BT138E Triac quantity Add to basket SKU: BT138E Categories: Electronic Parts, Spares & Accessories, Transistors Description Additional information Description Triac. Used on GI circuit control. Additional information Weight 10 g Related products Mini Post Rubber Ring £0.21 Select options This product has multiple variants. The options may be chosen on the product page 2″ Rubber Ring £0.59 Select options This product has multiple variants. The options may be chosen on the product page Yellow Post Sleeve £0.70 Add to basket 3 1/2″ Rubber Ring £0.99 Select options This product has multiple variants. The options may be chosen on the product page