The PSOTxxKCA series are a common cathode dual line transient voltage protector. This series is suitable for applications such as RS-232, RS-422 and RS-423 data lines, sensor I/O ports, industrial control and monitoring systems. The PSOTxxKCA series can be utilized as a two line unidirectional common-mode or a single bidirectional differential-mode protector. This series meets the IEC Compatibility requirements. Packaged in a SOT-23 configuration, the PSOTxxKCA series is available in 15 Volts or 36 Volts, with a peak pulse power rating of 300 Watts for an 8/20µs waveform.