Most of ASE Capacitor's customer use high voltage ceramic capacitor and high voltage diode to build Voltage multiplier, (CASCADE COCKCROFT-WALTON VOLTAGE MULTIPLIER in high voltage generator) which is basic circuit for X-ray, CT and NDT machine. high voltage multiplier diode with such big market demand.

In 2018, ASE Capacitor partner with local famous HV diode producer to win quite a lot HV projects. Customers also approval ASE brand Diode. In this market, most clients using HVCA brand and EDI brand from U.S.A, and more famous names like Japanese Origin and Sanken. All of above is not world-class renown brands like Vishay, TDK, Murata. Since this is specialized market and not massive product market like home electronics and consumer electronics. ASE HV diode widely used in aerospace, military weapons, mote vehicles, medical X-ray machine, electrostatic dedustings, scientific research institute. Their strong product is high voltage rectifier diode.

ASE HV diode peak working revere voltage(VRWM) from 1kv to 30kv, high voltage silicon stack voltage up to 500kv,Average Forward Current( IF(AV)) from 10MA to 20A, Reverse Recovery Time(trr) from 35ns to 2000ns,working frequency 50HZ to 200kHZ.