Triac - construction principles Typical products BCMlAM (1A / 600V), BCM3AM (3A / 600V), 2N6075 (4A / 600V) SCR BT137S-600E, MAC218-10 (8A / 800V) and so on. Power triac mostly used RD91 package. Triac - construction principle characteristic is that when G pole pole and T2 relative to T1, the voltages are positive patch SCR, T2 is the anode, T1 is the cathode. On the contrary, when the G electrode with respect to the pole and T2 are negative when the voltage of T1 thyristor BT136S-600E, T1 becomes the anode, T2 is a cathode. Since the triac, the reverse characteristic curve has symmetry, so that it can be turned in either direction. SCR SCR _ BT136S-600E_ are provided by Wal-electronic Dongguan City is fertile Electronic Technology Co., Dongguan City is Wal-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 the electronics are fertile and you hand into the brilliant, for a better future!