We have a circuit that has a 6V input for charging. We want to protect the device from ESD on the input, but have some discussion on where to place a resistor. The two differences we are looking at are below.
In the first case, we have the argument that the series resistor will slow the input charge somewhat, making life easier for the ESD diode and thus making it more effective.
In the seconds case, we have the argument that the ESD diode is left alone to do its job, and the series resistor can help absorb whatever the ESD diode doesn't handle.
Is there a common practice where to put the resistor and if so, why?