Root Cause Failure Analysis of Printed Circuit Board ... - SMTA
Root Cause Failure Analysis of Printed Circuit Board ... - SMTA
Root Cause Failure Analysis of Printed Circuit Board ... - SMTA
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Copper Etch Process<br />
• H H = = = Height Height <strong>of</strong> <strong>of</strong> Copper Copper Trace Trace<br />
Trace<br />
• Etch Factor = 2H / (W W max - W W W min) min)<br />
min)<br />
• Etch Factor Should Be Larger Than 1.0