UPT5E3/TR7 Circuit Protection

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TVS - Diodes

Transient Voltage Suppressor (TVS) diodes, also known as surge suppressors, are designed to protect sensitive electronic circuits against transient voltage spikes due to electrostatic discharge (ESD) or electrical overstress (EOS). These transient voltage spikes can occur in a variety of situations, from moderate power disturbances to dynamic power surges. In order to protect against these voltage spikes, TVS diodes, such as the UPT5E3/TR7, are used.

Application Field of UPT5E3/TR7

The UPT5E3/TR7 transient voltage suppressor diode is a bidirectional component that is designed to protect low voltage logic circuits as well as DC-powered equipment from overvoltage and ESD. The UPT5E3/TR7 can handle up to 200W of peak pulse power in its unidirectional configuration and up to 10W in its bidirectional configuration. This makes it an ideal choice for many applications such as protecting charging ports, automotive and telecoms circuits, sensor and audio circuits.

Working Principle of UPT5E3/TR7

The operating principle of the UPT5E3/TR7 is very simple. When a transient voltage spike occurs, the diode collapses its avalanche breakdown voltage and is quickly turned on. This allows it to absorb the surge without causing any damage to the load. When the spike is over, the diode turns off and the device is ready for the next transient. In its unidirectional configuration, the UPT5E3/TR7 acts as a fail-safe device, as it limits the output current or voltage to a safe range. In its bidirectional configuration, it acts as a clamp, limiting the voltage across the protected load to a predetermined safe voltage.

Conclusion

The UPT5E3/TR7 is an invaluable tool for protecting low-voltage logic circuits from transient voltage spikes due to external sources such as ESD or power surges. With its ability to safely absorb large peaks in both directions, and its low cost, the UPT5E3/TR7 is an excellent choice for many applications.

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