Discrimination thyristor (SCR) SCR pin pin discrimination by the following methods: first with a multimeter to measure the resistance R * 1K block between tripod, the resistance of the feet were small and cathode thyristor control BTA216, left kick to the anode. Then multimeter R * 10K block SCR BTA140, with fingers anode and the other foot, and do not let the feet touching, black pen then the anode, the red pen then the rest of the foot, such as the swing to the right hands , indicating that the red pen for the connected cathode-gate was not swinging. Thyristor (SCR) pin discrimination (2) Identification of damage: ① Ibid. If the measured anode - cathode positive and negative resistance is very small, indicating that short-circuited. If the measured gate - cathode large positive and negative resistance, indicating SCR damaged or shorted. ② measuring positive and negative when the gate to the resistance, do not use 10K files, to prevent high-pressure reverse breakdown table gate. SCR BTA204, SCR, are fertile Electronics Dongguan City is provided by Wal-Electronic Technology Co., Ltd. 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!