824520581 Circuit Protection

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TVS - Diodes

Transient Voltage Suppressors (TVS) are a type of diode that is used to protect circuits from high transient voltage spikes, high-energy transients, and electrical fast transients (EFTs). They are designed to absorb and dissipate transient energy, temporarily limiting voltage spikes and allowing the circuit to continue to operate at normal voltage levels. TVS diodes have become increasingly important within electronic designs due to their cost-effectiveness and space-saving construction.

824520581 Application Field and Working Principle

TVS diodes are an important component in any kind of electronic device, from computers to cell phones to household appliances. TVS diodes are usually used to protect circuits from high voltage spikes that occur during the process of switching, overvoltages caused by power surges, and other potential sources of harm. The TVS diode works by suppressing transient voltages below the breakdown voltage of the circuit. When the voltage exceeds the breakdown voltage, large amounts of current flow through the TVS diode, dissipating the energy across it.

When the transient voltage is reduced to its normal level, the current stops flowing through the TVS diode and the circuit can continue to operate normally. TVS diodes are typically used in a variety of applications, such as: overvoltage protection of hot-swappable power supplies, protection from high voltage spikes on the output of power converters or switching supplies, and protection from ESD and electrostatic discharge (ESD) events.

In the event of a power surge, a TVS diode will begin conducting current, effectively dissipating the extra voltage into the diode while protecting the components in the circuit. As the voltage exceeds the diode\'s threshold voltage, current will flow through it and be dissipated into the diode\'s junction, reducing the voltage to a safe level. This process ensures the safety of the other components in the circuit by limiting the amount of voltage they receive. TVS diodes can also be used to protect circuits from ESD events, providing essential protection for any device that may be exposed to ESD.

TVS diodes typically have a range of breakdown voltages from 6 to 25V, with the largest being rated at 6kV. This range of breakdown voltages allows for the protection of circuits from both low voltage and high voltage spikes. TVS diodes can also withstand high-energy transients, making them an ideal component for use in high-power systems. The advantages of using a TVS diode are that they are cost-effective, reliable, and have a small form factor, making them an ideal component for manufacturers.

In summary, TVS diodes are an important component in any electronic device, offering protection from high voltage transients, ESD, and other damaging electrical forces. They are cost-effective and reliable, making them a preferred choice for many manufacturers. By understanding their working principle and application field, one can use them to protect their circuits from electrical damage and ensure the safety of their components.

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