GenevaSTMicroelectronics announced a series of high-temperature TRIACs dubbed HiTj Snubberless, which maintains full specified performance up to a junction temperature of 150°C.
According to ST, the high-junction-temperature TRIACs will enable manufacturers to lower their costs by using smaller heatsinks. The HiTj Snubberless series requires no derating of any of its parameters up to the maximum junction temperature, and, achieves a turn-off performance at 150°C, which is three to four times better than normal, according to ST. In addition, the TRIACs deliver high-noise immunity of up to 1500V/microsecond. Further cost savings are possible for manufacturers through the elimination of RC snubber circuits and noise filters.
The TRIACs are suitable for use in universal motor-control applications, such as vacuum cleaners, washing-machine drum motors, and industrial drives; in hot environments such as cookers, ovens, kitchen hobs and coffee machines; and for achieving higher power density on PCBs, for heater and high-power motor control. They can also replace conventional TRIACs in closed environments where the ambient temperature is too high.
The HiTj TRIAC series is produced in TO-220AB, TO-220AB insulated (ceramic), and in D2PAK surface-mount packages, for maximum versatility. They are all 600V devices, with current ratings of 8A, 10A, 12A, 16A and 20A. The sensitivity range offered today is 35mA to 50mA, and will soon be extended with 10mA devices.
Pricing: From $0.50 to $1.00 in 1000-unit quantities.
Availability: Now in volume production.
Datasheets: t834h, t850h, t1035h, t1050h, t1235h, t1250h, t1635h, t1650h, t2035h and t2050h.