How To Select The Best TVS Diode For Your Electronic Application?
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How To Select The Best TVS Diode For Your Electronic Application?

Views: 0     Author: Site Editor     Publish Time: 2020-11-27      Origin: Site

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Circuit Operating Requirements

In essence, the operating requirements of the application’s circuit will include the maximum steady-state voltage that has been defined, the optimal ambient temperature recommended and the electric current values and capacities of the electric load of a circuit.


Clamping Voltage (VC)

The circuit protective device will begin conducting when the maximum threshold voltage that has been preset is exceeded. The device will cease conducting and return back to a non-conducting mode when the overvoltage scenario drops below the maximum preset threshold. This process ensures that the overvoltage surges have been successfully clipped off to safe levels.


Breakdown Voltage Level (VBR)

Generally, any circuit protective device will have a preset breakdown voltage level. This is the control level of voltages in electrical circuits. When determining the suitable breakdown voltage it is imperative to ensure that the maximum breakdown voltage is higher than the maximum rated standoff level. On the other hand, care should be taken to ensure that the maximum breakdown voltage does not exceed the absolute maximum rating for the output capacitors.

The breakdown voltage is usually measured as a test current (IT) 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.


Rated standoff voltage (VWM)

This is the normal operating voltage specified for a device. When the electric voltage rises to this point the device will begin acting as an impedance so that it could protect the circuit from a high electric current that could casue damage in a circuit. In normal circumstances, it is usually 10% below the maximum breakdown voltage hence it helps to minimize incidences of standby leakage current.


Peak impulse current (lPP)

This is the maximum capacity of electric energy spike that a protective device can withstand without getting damaged. When selecting a suitable transient suppressor, it is critical to specify the peak impulse capability for a given transient waveform. In most diodes, the peak pulse capability will be rated either 8/20µs or 10/1000µs impulse waveform.


Peak Pulse Power Dissipation (PPP)

The actual power dissipation of the transient suppressor component is a key determinant be considered when selecting the most suitable circuit protective device for your electronic application.


For more information about Transient Voltage Suppressor, please click here!


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