Schematic Symbol. TOA. APPLICATIONS DESCRIPTION: The BTABW triac is suitable for general purpose AC switching. FEATURES. Low thermal resistance insulation ceramic for insulated BTA. High Available either in through-hole or surface mount packages, the BTA16, BTBand T, T and T Triac series are suitable for general purpose mains power AC switching. Pin Out. RoHS. Features. High commutation or very high commutation capabilityRoHS (/95/EC) compliant packagesUL, V0 flammability package resin complianc