GENUINE STMICROELECTRONICS  BTA08-600TW TRIACS. Direct from Manufacturer Snubberless™, Logic Level 600V 8A Triac. ( see pictures for full spec).  These are ideal replacements for damaged triacs in lighting controllers  NJD EURO 4E ,DMX LOGIC etc. They can also be used in many other situations where triacs are required. Suitable for general purpose AC switching. Can be used as an ON/OFF function in applications such as static relays, heating regulation, Induction motor starting circuits or for phase control in light dimmers, motor speed controllers etc. I am a fully qualified Electronics engineer with over 30 years experience, so if you have any questions please ask and I will get straight back to you. Thanks for looking.