I have module that will be plugged into another device. The unit itself has no power and receives all power, and signaling from the mating devices. It has a 10 pos exposed connector (male pins) to the outside world.
I have a few questions with regards to ESD protection for these types of devices. (I have looked over the other Q/A but have not found something that gives me a complete picture).
- Will clamping diodes be effective ? I have thought about placing clamping diodes across the sensitive pins. After some thought, I think that they would not be effective, whereas a colleague of mine thinks that it would. My reasoning is that there is no "voltage" to clamp too and that the diodes simply won't turn on. My colleague argues that, the diodes will turn on, because the VCC and GND would be effectively the same due to the various capacitors on the board.
Does every pin require protection or simply signal paths that have sensitivity to ESD (for example, a VCC pin, or GND pin) ?
What are clamping diodes effective for (in terms of ESD) ?
- What are TVS diodes effective for ( in terms of ESD) ?
- What are MOVs effective for (in terms of ESD) ?
- What is a good reference to learn more and become more familiar with ESD protection mechanisms/designs for battery/isolated systems ?