Thyristor Modules
A thyristor is a four-layer semiconductor device, consisting of alternating P-type and N-type materials (PNPN). A thyristor usually has three electrodes: an anode, a cathode and a gate, also known as a control electrode. The most common type of thyristor is the silicon-controlled rectifier (SCR).
Brands
Semikron
Sirectifier
Starpower
Infineon
Vishay.