CAPZero-3 X-Capacitor Discharge ICs Power Integrations CAPZero-3 Energy-Saving X-Capacitor Discharge ICs reduce standby power for appliance applications. The two-terminal CAPZero-3 ICs enable designers to easily meet IEC60335 safety approvals for major appliances and cover all capacitor values from up to 6µF. The IEC60335 is the discharge safety standard for all appliances. To protect the user from an electrical hazard, the voltage across the input X capacitor must discharge to less than 34V within <,1s after the AC is removed.