Hi experts,
My customer used spark gap in their design . the gap is 0.2mm. they also used this between PACK+ and PACK-. but recently, they found some of their PACK+ line on their PCBA was carbonized. they didn't meet this issue before. just in this design with spark gap. they suspected it could be a copper ion migration issue due to this very small 0.2mm gap. could you please suggest:
1. Are there any cautions when using spark gap? what's relationship between the votlage and the gap?To be more specific, if the voltage between PACK+ and PACK- is 36V, What's the suitable gap distance.
2. if have to use some protective covering on spark gap, What might be the problem?
