Assembly and component placement
: Table 6-1 in the document specifies minimum spacing based on voltage potential. For example, at 100V, the minimum clearance for external conductors is approximately 0.6 mm. Above 500V, spacing is calculated using a per-volt clearance value. 2. Trace Width and Current Carrying Capacity Ipc-2221 Pcb Design Pdf
A common mistake is thinking IPC-2221 stands alone. In reality, it is the "parent" standard. When you search for the PDF, ensure you understand its relationship with (the section standard for rigid organic boards). Assembly and component placement : Table 6-1 in
At 5,000 meters, air is thinner; arc-over happens at 50% of the sea-level voltage. If your product is for a high-altitude city (e.g., Denver or Mexico City), the PDF requires you to multiply internal clearances by 1.5x. air is thinner