Ceramic housing for semiconductor and diode,passed ISO 9001 and ISO14001.Export to ... circles Plating thickness,2-7μMain materialCeramic,93.5%min AL2O3 Glaze,Color white ,T ≥14 0°C Flange,TU1(OFHC ... ,Ag72Cu28 Alloy Gate tube,TU1(OFHC·Cu)or Ni42Fe58 Alloy Ceramic housing for IGCT, Reserve conducting gate commutated thyristor