BT138E Triac Posted 6th July 2015 by by £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 Black Post Sleeve – 23-6556 £0.73 Add to basket Yellow Post Sleeve £0.70 Add to basket Mini Red Flipper Rubber £0.62 Add to basket 4″ Rubber Ring £1.19 Select options This product has multiple variants. The options may be chosen on the product page