V39ZT20P

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Transorbs or Transient Voltage Suppressors (TVS) are electronic devices used for protection against voltage spikes, transients, or surges. They are commonly found in the power supply design and interconnections of circuits in electrical and electronic equipment. Their purpose is to reduce or eliminate the amplitude of signals that exceed the specified limits in order to protect the connected equipment and prolong the life of its components. This document will provide a general overview on the application field and working principles of the V39ZT20P Transorb.

The V39ZT20P is a unidirectional Transorb designed for AC and DC line to line protection. It offers low capacitance and low clamp max voltage to support ESD and surge applications. The device is an ideal solution for protecting high speed data lines such as USB 2.0 and SATA II from ESD strikes and overvoltage events. It is available in a SOD-523 package, making it small enough for space-constrained applications.

Transorbs work by limiting the voltage across itself when an overvoltage transient occurs. When a voltage spike occurs, the device "clamps" across the line, providing an alternative path for the current to flow, thus protecting the device from the transient. Here are the key features of the V39ZT20P:

• Low clamp voltage of 16V maximum
• High peak pulse current Ipp of 20A
• Very fast response time of 0.5ns
• Excellent thermal stability
• High surge-absorbing capability

As we can see, the V39ZT20P Transorb is designed to provide excellent ESD and surge protection in a small package. It is also effective in dissipating energy which would otherwise damage connected circuits. For example, if a 15V spike were to occur, the device would "clamp" the voltage at 16V, thus protecting the device from damage.

Now let\'s look at the working principle of the V39ZT20P. When an overvoltage transient occurs, a voltage builds up across the Transorb\'s p-n junction which an Activate voltage, VBR. This causes the device to conduct, providing an alternate path for the current to flow. The amount of current conducted by the device is determined by its Peak Pulse Current (IPP). Once the transient has ceased, the voltage will return to normal and the device will stop conducting current. The device has a Betahold current Ih, which is the minimum holding current required to prevent the device from deactivating.

In summary, the V39ZT20P Transorb is an excellent choice for AC and DC line to line protection against overvoltage transients. Its low clamp max voltage and fast response time make it ideal for protecting high speed data lines from ESD strikes and overvoltage events. Its high surge-absorbing capability and excellent thermal stability provide reliable ESD protection and improve system longevity. We can see how Transorbs are essential in power supply design and interconnections of circuits for protection and reliable operation.

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