Maximum TVS diode clamping voltage

[melmar]

Is a TVS diode clamping voltage of 6.5 V acceptable for supplementing the built-in ESD protection of the NRF52840 GPIO pins?

It has been previously established in the forum here that "Vbr of 5 to 6 V is ok."

Using the Texas Instruments ESDS31x with a clamping voltage of 6.5 V would allow hand soldering it to the nRF52840 Dongle to protect just one GPIO pin. All other TVS diodes with a clamping voltage 6 V or smaller are not suitable for hand soldering. 

[mathiaso]

Hi, Klaus.

Is a TVS diode clamping voltage of 6.5 V acceptable for supplementing the built-in ESD protection of the NRF52840 GPIO pins?

Yes, that shouldn't be a problem.

As mentioned in the other ticket you're referring to:
"Any TVS diode can be used here, as long as the breakdown or clamping voltage is higher than the operating voltage on the pin."

Best regards,
Mathias