What is the clamping voltage of a TVS diode?
starts conducting (clamping) at the minimum breakdown voltage (6V: VBR@IR) in a negative direction, there will be a increase in current in the positive direction of the 8/20µs pulse. When the transient current drawn by the PSD05C is at 1 Amp, the device clamping will be at 9.8 Volts.
What is the most crucial parameter’s for TVS diode?
Peak Pulse Current, IPP: Maximum surge current which the device can withstand without damage. Most low power TVS diodes are specified with the 8 μs x 20 μs current surge pulse.
Where do you put a TV diode?
Place TVS diode near the edge of the PCB. To enable the excessive surge current to be channeled to chassis ground before damaging the transceiver, the placement of the TVS diode is also important. It is a good practice to place TVS diodes as close to the edge of the board as possible.
Can I use a higher rated diode?
Yes, higher voltage rating is fine. It just means more safety margin against mains transients (which is good).
How do you calculate the clamping voltage for a TV?
With a pessimistic maximum current known, a representative clamping voltage can be calculate via linear interpolation between V b r ( m i n) at test current and V c l a m p at max current. Likewise you have a need to clamp at 13V.
What are the advantages of using a TVS diode?
One advantage of TVS diodes is their ability to continue conducting electric current even after the voltage flowing across the diodes significantly drops below the preset breakdown voltage level. Generally, any circuit protective device will have a preset breakdown voltage level. This is the control level of voltages in electrical circuits.
How is breakdown voltage measured for TVS diode?
The breakdown voltage is usually measured as a test current (I T) of 1mA or 10mA. When selecting the appropriate transient suppressor component, it is important to consider this parameter in relation to the electronic application which will use the diode.
Why are TVS diodes used as transient attenuators?
A TVS diode makes a popular transient attenuator because of the fact that they have the ability to clamp transient overvoltage and limit their amplitudes to safe levels that cannot cause any damages to the electronic application.