The BYW29E-100,127 NXP part is a discrete power bipolar transistor. It has a maximum collector current of 100A, a collector-emitter voltage of 800V, and a total power dissipation of up to 800W. It is suitable for use in a variety of applications, including switched mode power supplies, inverters, and energy-saving devices. The device also has a low saturation voltage and is capable of carrying high peak collector currents.