IPC-2152 Trace Calculator   Pcb Trace calculator from IPC-2152 Figure 5-2 (Universal Chart) Only be used if the board area is at least 3x3". For smaller boards, figure 5-1 (IPC-2152) should be used (Conservative Chart - below). Best resolution: 800x480 or higher. IPC-2152 Trace Calculator © 2011 EiR software Link to conservative Chart