Overvoltage Protection Transient Voltage Suppressors (TVS) Electrostatic Discharge Protection Devices (ESD) Metal Oxide Varistors (MOV)Gas Discharge Tubes (GDT)Spark Gap Protectors (SPG)Thyristor Surge (TSS) Overcurrent Protection Polymer Positive Temperature Coefficient (PPTC)Fast Action、Slow Blow Fuse (FUSE)Negative Temperature Coefficient (NTC)