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Example: Customer Drill Chart with Zero Hole Tolerance Our default hole tolerance is listed above. If your hole tolerances are zero (see below), then Advanced Circuits will assume that you are OK with our default hole tolerance. +/- 0.003" Custom Spec upon request 1 oz and 2 oz finished copper weight and 3 oz finished copper weight (when starting with 2 oz foil) only. 250", larger holes will be routed, see Rout tolerances below) +/- 0.005" Standard Spec (applies to holes up to. 005" for vias and a minimum of 0.007" for component holes. This means the annular ring (radius of the pad) should be at least. Pad size should be at least + 0.010" over finished hole size for vias and + 0.014" over finished hole size for component holes.
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Minimum of 0.010" (outer layers) and 0.015" for inner layers (0.020" preferred for inner layers). We require a minimum of 0.010" inner layer clearance. If you have any questions or want to discuss unique requirements, please call 1-80 to contact us. Within these parameters, there is enough variation to allow us to manufacture the board and then also for it to work properly in your application. Adhering to these tolerances will allow for proper manufacturing of your PCBs. Assure Proper Manufacturing of Your Printed Circuit BoardsĪdvanced Circuits provides you below with the required in-house tolerance guidelines to ensure quality manufacturing of your printed circuit boards.