The SMC Diode P6KE20A is a 27.7V 19V 17.1V DO-15 Transient Voltage Suppressor (TVS) that is RoHS-compliant. It is designed to provide overvoltage protection for components in an electrical circuit, such as semiconductors or perishable components. It is used to clamp overvoltage pulses and protect devices from such sudden surges. The P6KE20A is able to handle power surges of up to 200 watts, and the device is encapsulated in a DO-15 or DO-16 package. The TVS is designed for high-surge and low capacitance applications. It has low clamping voltage, fast response time, and is designed to suppress high energy spikes.