Breakdown voltage of MCPCB?
What factors will affect the breakdown voltage of the 2W/m.K aluminum core printed circuit board?
There are two main factors will affect the breakdown voltage.
1) The trace/space width.
The breakdown voltage is proportional to line/trace space,that means if you need to enlarge the breakdown voltage, you can enlarge the line/trace space. The line/trace space more bigger,the breakdown voltage will be more bigger.
2) The dielectric layer.
The breakdown voltage is proportional to dielectric layer, that means if you need to enlarge the breakdown voltage, you can add dielectric layer, but the thickness of finished printed circuit board will be more thicker (around 100-125um)when add dielectric layer.
What‘s and How to test the breakdown voltage?
For example,we tested our raw material: 2W/m.K,100x100mm raw material with 10mm each side without copper, when leakage current is 5mA, the Voltage(AC) is 3.0 KV,so the breakdown voltage will be 3.0 KV,meanwhile which mean we test the breakdown voltage as 5 mA leakage current,and the breakdown voltage will be higher than 3.0 KV if using 6 mA as the biggest leakage current,and lower if using 4 mA.
Enclosed please check our Aluminum CCL Report for your reference.
Don't hesitate to contact us if any questions about breakdown voltage and Metal core PCB,we are always here for you.
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