Triac thyristor modules radiator (four) by the current capacity classification: SCR can be divided according to the current capacity of high-power thyristor, the power and low-power SCR SCR three. Typically thyristor, thyristor power multi-metal shell package, while medium and small power thyristor is to use more plastic or ceramic package. (E) by off-speed Category: SCR turn-off speed can be divided according to their ordinary SCR and high frequency (fast) SCR. Triac - thyristor the plastic tube measuring method with a small heatsink itself SCR BT134W-600E, is usually very attached to it and T2 SCR T405-800T, this feature can also be used as a basis for discrimination T2. As verification, measured between T2 and heat sink to 0V SCR BT136S-600E, so T2 judgment is correct. Turn the red rods connected T2, the black bars either pick one of the remaining two poles, then display overflow patch SCR | are fertile Electronics (certified) | SCR Dongguan City is provided by Wal-Electronic Technology Co., Ltd. Dongguan City is Wal-Electronic Technology Co., Ltd. (www.dgmydz.com) (www.dgmydz.com) is Dongguan, FET leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. Wal-electronics leader in the positive with the staff warmly welcome all inquiries negotiations to create a positive future Wal-electron better.