Vitaliy wrote: > Can someone explain to me what defines the maximum current via a transistor? > Since Imax * Vce != Pmax... > Maximum current thru a transistor is when Vce is saturated (full conducting). While Pmax is achieved when it is half-conducting and dissipating the power used as heat. regards, Reggie http://www.microelektronics.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist