L2004V3

Thyristors - TRIACs are particularly suited for applications requiring high current). Such applications include household heating and motor control circuits, AC switching, and level control.   The L2004V3 TRIAC is one such device. This particular device has gate trigger voltage in the range of 3.9V and a breakdown voltage of 400V, allowing it to switch large currents in various AC applications. As with all TRIACs, the L2004V3 is a three-terminal, bidirectional device. This lets the TRIAC work equally well with both positive and negative AC voltage.

The L2004V3 has a specific type of construction. It has a four-layer PNPN-type structure, with an anode (A1), cathode (C2), and an integrated gate, which triggers the device when a current flows. The P and N stands for the type of semiconductor layer that comprises the structure. Each of the four semiconductor layers can be seen as acting like two independent thyristors connected back to back. This makes it very versatile in its applications.

When connected to an AC power source, the L2004V3 begins to operate once the gate current, usually in the range of 4-10mA, is exceeded and the gate-trigger voltage between 3.0V and 3.9V is reached. Current then flows from anode to cathode and back again as the voltage cycles to its peak and returns to zero. The current will continue to flow until either the gate current is removed or the peak voltage value is reached. This makes the L2004V3 a cost effective choice for applications where direct current (DC) is required rather than AC.

The main application of the L2004V3 is for motor control in household electrical appliances and in industrial equipment. The L2004V3, when connected to an AC motor, will enable the user to control the speed, direction and torque of a motor, making it an important factor in energy saving as well as performance. It is also used in heating control such as in electric fan heaters, and level controls in fluid tanks and elevators.

The advantages of using the L2004V3 are numerous. Its gate trigger voltage and gate current requirements are relatively low, its gate current is insensitive to voltage and temperature, and it is capable of switching large currents. It’s also very reliable in its performance, requiring no external components to work.

To summarize, the L2004V3 is a three-terminal, bidirectional TRIAC that is well suited for applications where high current is required. Its four-layer PNPN-type structure and low gate current requirements make it a cost-effective solution for motor control, heating control and level control. Its advantages include low gate trigger voltage, insensitive gate current, large current switching, and reliability without the need for external components.