Half Wave Uni-Directional Thyristor, solid-state component, Protection thyristors
Q6040K7 Series 40 A 600 V Bidirectional Alternistor TRIAC – TO-218AC Website URL: https://www.futureelectronics.com/p/electromechanical–circuit-protection–power-thyristors/q6040k7tp-littelfuse-5038100