Product features and main applications: 

NPNPN five-layer structure of silicon bidirectional  devices; with independent intellectual property rights of  single-sided digging technology, table glass passivation  process; multi-layer metallized electrodes on the back;  with high blocking voltage and high temperature stability. 

Mainly used in: 

vacuum cleaners, power tools and other motor  speed controllers; solid state relays; heating  controllers (temperature regulation); other phase control circuits.