Triac - thyristor electron volt-ampere characteristic way into the N1 zone, the P2 zone holes. N1 zone into the electrons and the P1 region through the junction J1 injection hole recombination N1 zone, too, into the hole P2 area by the N2 area by injecting electrons into the complex junction J3 P2 region, avalanche breakdown, triac - voltage characteristic way SCR becomes forward-biased junction J2 SCR BT136S-600E, as long as the current is slightly increased SCR T435-600T, the voltage will quickly drop, the so-called negative-resistance characteristics. Then J1, J2, J3 three junctions are in forward biased SCR T405-800T, SCR will enter the forward conducting state ----state, this time, its characteristics with the conventional PN junction forward feature Similar thyristor, SCR, is provided by Wal-electronic Dongguan City is fertile Electronic Technology Co., Dongguan City is Wo Electronic Technology Co., Ltd (www.dgmydz.com) (www.dgmydz.com) strong, credible, FET and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead positive fertile electronic and you hand into the brilliant, for a better future!