How to distinguish the cathode and anode of thyristor (SCR)

The pins of the thyristor (SCR) can be judged by the following methods: First, measure the resistance between the three pins with a multimeter R*1K. The two pins with lower resistance are the control electrode and the cathode, and the remaining pin is the anode. . Then put the multimeter in the R*10K block, pinch the anode and the other foot with your fingers, and keep the two feet out of contact, connect the black test lead to the anode, and the red test lead to the remaining leg. If the test needle is swinging to the right, the red test lead is clarified. Connected as the cathode, if it does not swing, it is the control electrode.