Features: 1) electrical isolation between chips and substrate, 2, 500v ac. 2) international standard encapsulation. 3) full press-fit construction, superior temperature characteristics and power circulation capability. 4) simple assembly, easy to use and maintain. 5) small size, light weight. 6) for use on: A) dc power for instruments B) industrial heating controlling C) various rectifying power supply D) light change E) non-touch switch F) soft-starters for electric machines G) static compensation of zero power H) arc welders I) frequency converters J) ups power supply K) charging and discharging of battery 7) rated current ranging from 60a to 200a, peak voltage ranging from 200v to 1, 600v are all available. Standard export cartons