ON Semiconductor 2N6403 Thyristor SCR

The ON Semiconductor 2N6403 is a robust Silicon Controlled Rectifier (SCR) designed for medium power switching and phase control applications. This SCR is a member of the thyristor family, which is well-known for its high efficiency and reliability in various electronic circuits. The 2N6403 is particularly suitable for industries that require precise control over high-voltage AC power, making it an ideal component for motor control, heating, and lighting systems.

With a repetitive peak off-state voltage (VDRM) of 400V and a non-repetitive peak off-state voltage (VDSM) of 400V, this SCR can handle significant voltage without failure. It also has a maximum average on-state current (IT(AV)) of 16A, which allows it to control a considerable amount of power for its size. The 2N6403 is capable of withstanding a surge current (ITSM) of up to 160A, ensuring that it can manage the inrush currents typically seen in power applications.

The 2N6403 is housed in a TO-220AB package, which is known for its ability to dissipate heat efficiently. This thermal performance is critical in applications where the SCR is expected to handle continuous current flow. The device also features a gate trigger current (IGT) of 30 mA, which means it requires a relatively low current to switch on, making it compatible with a wide range of control circuits.

In terms of protection, the 2N6403 has a holding current (IH) specification of 40 mA, which helps prevent unintentional triggering due to noise or voltage fluctuations in the circuit. This characteristic is essential for maintaining stability and reliability in sensitive applications.

Overall, the ON Semiconductor 2N6403 SCR is a versatile and reliable component for designers looking to implement efficient control over AC power. Its robust electrical characteristics and thermal performance make it a solid choice for a wide array of medium-power applications.