Supply of new RD-91 package BTA25-600B ordinary triac thyristor three electrodes can be blocked with a multimeter ohm R × 100 gear to measure. As we all know, the thyristor G, is a PN junction between K (a) SCR T405-600T, the equivalent of a diode, G is positive, K is negative, so, according to the test method diode SCR 2P4M, find three poles of the two poles SCR C106G, measure its positive and negative resistance, resistance hour, multimeter black pen then the control electrode G, can teach just demonstrated with the circuit board. Turn the power switch S, click the button switch SB, light bulb is good, does not light is bad. SCR SCR module chip from X point of view, can be divided into controlled rectifier module and two categories; distinction from the specific uses can be divided into: ordinary thyristor modules (MTC \ MTX), ordinary rectifier module (MDC), ordinary thyristor rectifier hybrid module (MFC), fast thyristor, rectifier and hybrid module (MKC \ MZC), non-insulated thyristor rectifier and hybrid modules (also known as the welding machine-specific modules MTG \ MDG), the three-phase bridge rectifier output thyristor modules (MDS), single-phase (three-phase) rectifier bridge modules (MDQ), single-phase half-bridge (Three Phase Bridge) module (MTS) and Schott base module. SCR 2P4M_ 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. You can also access (www.dgmydz.com/supply_details_42335810.html), for more information about the company.