The 1.5KE220CA is a single-channel TVS diode produced by Littelfuse. It is designed to protect sensitive electronic components from voltage transients caused by Overvoltage (EOS), Electrostatic Discharge (ESD), and other electrical surges. This diode can handle up to 220 watts of peak pulse power dissipation. It is available in SMA, SMB, DO-201, and SOD-323 packages. The 1.5KE220CA has a low threshold voltage of 5.5 volts for ESD protection and a low capacitance of 900pF for fast response times. It is lead- and halogen-free, which makes it suitable for green, RoHS compliant designs.