The Supertex TC1550TG-G consists of a high voltage Nchannel and P-channel MOSFET in an SO-8 package. These are enhancement-mode (normally-off) transistors utilizing an advanced vertical DMOS structure and Supertex's well-proven silicon-gate manufacturing process. This combination produces devices with the power handling capabilities of bipolar transistors and with the high input impedance and positive temperature coefficient inherent in MOS devices. Characteristic of all MOS structures, these devices are free from thermal runaway and thermally induced secondary breakdown.