Clearance and Creepage Rules for PCB Assembly

It’s important to follow electrical spacing rules for keeping the product safe in case the normal operating voltage exceeds 30VAC or 60VDC. You’ll be surprised to know that voltage above these levels are considered perilous and these designs are considered high voltage.

This blog post includes important spacing rules, both creepage and clearance, and some methodologies to make sure these rules are applied precisely and adhered to. We’ll be sharing a few important Clearance and Creep page Rules for PCB Assembly.

Design Trends

We aim to minimize size and maximize component density on Printed Circuit Boards and minimize the overall PCB design & assembly costs. The whole electronics product development industry is focusing on recent high-density components. This miniaturization offers some serious challenges to the designers when using mixed technology and where the design parts include the high voltage circuits. Previously, designing high voltage boards separately in a multi-board system was an easy process.

But now the increased focus towards miniaturization implies that there is at least space left for multiple boards, designs employing mixed technologies have increased in the numbers.  The high voltage circuits demand a new set of rules for operator’s safety. It is important to have a deep understanding of these rules and different ways to implement them while focusing on reducing the overall product size.

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