Triac And Diac Trigger Reside In Same Package

The Alternistor QUADRAC series is claimed to be an ideal, lower-cost alternative to the option of buying discrete diacs to assemble in conjunction with gated triacs. The device comprises a triac and a 33V to 43V diac trigger mounted inside the same package, eliminating the need for snubber networks. Being a bidirectional ac switch, the device is gate-controlled for either polarity of main terminal voltage. Current capacities range from 5A_rms to 15A_rms with blocking voltage ranging from 400V to 600V. The devices' packages are UL recognized and electrically isolated to 2,500V_rms from their leads to their mounting surfaces. No external isolation is required and all junctions are glass-passivated. Pricing starts at $0.75 to $2 and delivery is from stock to eight weeks ARO.