CD631215C

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Thyristors - SCRs - Modules

CD631215C is a bidirectional, controlled AC switch typically used in applications such as low-voltage motor control, AC switching, lighting, SCR triggering, etc. It is a three-layer power semiconductor device made up of thyristor/silicon controlled rectifier (SCR) modules. This device provides long-lasting low power consumption and reliable power control. It can switch AC input current up to 12A at a voltage up to 15V, with a maximum power dissipation of 10W.

Application Field of CD631215C

CD631215C modules are commonly used in applications such as motor control, AC switching, lighting, SCR triggering, and general purpose AC switching. It is also suitable for power supplies, battery chargers, UPS systems, home appliances and industrial equipment. It is one of the most widely used SCR modules in the market due to its simple, affordable and reliable design.

Working Principle of CD631215C

CD631215C is a three-layer semiconductor device containing a SCR and two diodes in layers. It provides bidirectional, low power, reliable control for AC input current. The SCR is built with a gate electrode, two anode electrodes and a cathode electrode. When the gate electrode is triggered, it closes the anode-cathode circuit, allowing current to flow and the device is said to have been "fired" or turned "on". When the gate electrode is released, the anode-cathode circuit is opened and it cannot be re-triggered until the gate electrode is fired again.

The two diodes in the CD631215C module provide additional protection and fault prevention in the event of an input voltage spike, or other transient conditions. The diode connected to the gate electrode provides "flyback" protection, preventing the voltage from reaching an unsafe level when the module is switched off. The diode connected to the cathode electrode ensures that the supply current is not suddenly stopped, which could otherwise cause an inductive kickback.

In general, the CD631215C module is a reliable high power switching device for any AC application. Despite its simple design and construction, it offers excellent low power performance and protection. It ensures reliable switching of AC current, minimizes power losses and prevents unnecessary current spikes. This makes it an ideal choice for a wide range of AC load switching applications.

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