T7SH1040B4DN

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Thyristors - SCRs are a type of specialised semiconductor diode used in electronic power control. The T7SH1040B4DN is a triac thyristor (short for "triode for alternating current") that includes an integrated gate driver, and is specifically designed for switching of higher-voltage AC circuits.

The T7SH1040B4DN features a blocking voltage of 400V and a maximum reverse gate voltage of 4V. The thyristor is triggered with a sinusoidal alternating current, and the sequence of operations is the same as in a typical SCR. Once the anode current reaches the forward holding current level, the device switches on and current flows. While the anode current is greater than the holding current, the device remains on. The device is turned off when the current falls below the latching current.

The T7SH1040B4DN is a particularly versatile thyristor, as it can switch both voltage and current. It is therefore a common choice for applications such as controlling the speed of a motor, controlling the intensity of lighting, and for soft-start circuits. As the device can be used for both AC and DC applications, it’s also often seen in motor drive, lighting and heater control, and in AC power control circuits.

The T7SH1040B4DN is also particularly well-suited to power electronics applications. As it features built-in protection features, such as over-temperature protection and reverse diode protection, it is ideal for many applications, where protection against unexpected changes in voltage and current is required.

The device has a wide operational temperature range between -40⁰C and +125⁰C, which is beneficial for applications that require extended temperature ranges, for example in automotive and industrial settings. The device also has a fast turn-on time of just 0.5ms and a very low on-state resistance of only 40mΩ, allowing it to switch quickly and efficiently.

Overall, the T7SH1040B4DN is an versatile and reliable thyristor, capable of providing speedy and efficient switching for applications ranging from motor speed control and home appliance control to power electronics applications.

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