SUNNYVALE, Calif. Philips Semiconductors has introduced a line of high-voltage silicon bipolar fast-switching transistors designed to reduce energy costs by cutting power dissipation in electronic lighting ballasts by about 40 percent.
The BUJ-Series transistors also have lower junction temperatures, reduced heat-sinking requirements and improved reliability, according to the company. Fabricated using a planar-passivated ion-implantation process, they feature fall times as short as 30 ns when switching inductive loads of several amps. They are also said to have tightly controlled storage times, very short turn-on times and low VCE saturation voltages.
The transistors are available with collector-emitter voltage ratings between 700 and 1,200 V and collector current ratings between 0.5 and 6 A. They are available in SOT-78 and SOT-186A packages, priced between 35 and 40 cents apiece in small quantities.
Call (800) 447-1500, ext. 1706
EETInfo No. 617