TVB065NSA-L Circuit Protection

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TVB065NSA-L Application Field and Working Principle

Thyristors, commonly known as Silicon-controlled rectifier (SCR), are widely used for different purposes. The TVB065NSA-L "Triac SCR with Zero Current Latching" is a special type of thyristor developed and produced by Vishay Siliconix. It is primarily used as a line switching component for applications that require complete switching of the AC line. It is also suitable for applications where frequency and timing are critical.

Overview of the TVB065NSA-L

The TVB065NSA-L is a highly efficient three terminal silicon-controlled rectifier with built-in zero current latching feature. It is available in a TO-92 package type which makes it suitable for both power and commercial applications. The device features an integrated gate with positive temperature coefficient (PTC) to provide temperature limitation and more reliable performance.

Application Field of TVB065NSA-L

The TVB065NSA-L can be used in various application fields. It is suitable for applications requiring complete AC line switch control, such as TV backlight, motors, power supplies, home appliances (e.g. electric ovens and washing machines), industrial lighting, solar panels and others. It is also suitable for frequency/timing-critical applications due to its low gate current requirements and allow for low-current operations suitable for solar-based applications.

Working Principle of TVB065NSA-L

The working principle of the TVB065NSA-L is designed to provide complete AC line switching capabilities. The device has three terminals, namely the anode, the control gate, and the cathode.

In order for the device to switch an AC line, current needs to be supplied from the control gate to the anode, while the cathode is kept at a low voltage in comparison to the anode. This allows the device to be triggered and the AC line will be switched.

Once the device is triggered, it will remain latched in its on-state until gated is triggered again. This is due to the unique zero-current latching feature, which lets the user control the switch state without having to supply additional current. This feature is particularly useful in AC line switching applications, as the current can be applied from the line itself.

Conclusion

The Vishay Siliconix TVB065NSA-L is a highly efficient three terminal thyristor ideal for applications that require complete AC line switching capabilities. Its zero-current latching feature enables the user to switch the AC line without having to supply additional current.

The device is suitable for applications ranging from commercial appliances and automotive accessories to solar power solutions. As such, it is an essential component in many different applications.

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