Jester
Full Member level 6
I realize there is not a clearly defined answer to this question, I'm looking for advice.
For ESD protection of an exposed signal on a consumer product for example a RS-232 comm port signal or a USB power or data signal, where we can realistically expect the end user to take no precautions regarding ESD.
If we assume the TVS will be placed close to the connector say < 10mm, what is a reasonable rating in terms of Joules to provide enough protection to prevent ESD failures of the protected circuit?
A quick DigiKey search shows Joule rating ranging from 0.003 to 10,000J. I would think that a 3mJ device is better than nothing but I'm guessing it would not last very many ESD encounters?
For ESD protection of an exposed signal on a consumer product for example a RS-232 comm port signal or a USB power or data signal, where we can realistically expect the end user to take no precautions regarding ESD.
If we assume the TVS will be placed close to the connector say < 10mm, what is a reasonable rating in terms of Joules to provide enough protection to prevent ESD failures of the protected circuit?
A quick DigiKey search shows Joule rating ranging from 0.003 to 10,000J. I would think that a 3mJ device is better than nothing but I'm guessing it would not last very many ESD encounters?
