Triac - thyristor of the plastic tube measuring method itself with a small fin SCR T435-800T, usually it is highly connected with the T2, this feature can also be used as a basis for determining T2. As verified SCR BT137S-600E, measured between T2 and heat sink is 0V, so determining the correct T2. Then turn red stick T2, then the rest of the black bars any one of bipolar SCR T435-600T, overflow is displayed triac - Measurement of red plastic bar table SCR short T2 and G, this display 0.546V (pipe conducting), a popular bar table from G show 0.558V poles, apparently SCR, the value is greater than the turn-on voltage, but less than Ugt1, maintain the tubes in a conducting state. Upon detecting trigger performance opposite direction, very close to the results described above, the tube prove good performance. Patch SCR, 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!