T835T-8T.
STMicroelectronics
Price range: $0.84 - $1.45
TRIAC 8A 800V TO-220AB-3; Peak Repetitive Off-State Voltage Vdrm:800V; On State RMS Current IT(rms):8A; Triac Case Style:TO-220AB; Gate Trigger Current Max (QI) Igt:35mA; Gate Trigger Voltage Max Vgt:1.3V; Peak Gate Power:1W