PCB Board thickness at RAYMING 1. Nominal board thickness is often just a label. 2. Calculated board thickness is the addition of the nominal thicknesses of each layer that composes the buildup (laminates plus copper). The measured thickness is the actual laminate-to-laminate thickness with the addition of the raw external copper thickness. 3. Board thicknesses do not include plating, finishes, soldermask, and silkscreen. 4. Like RAYMING, most manufacturers will guarantee a 10% tolerance from the calculated thickness. And most importantly: If board thickness is a crucial dimension in your product, never expect to receive an exact thickness, and make sure that there is sufficient allowance that considers all worst-case tolerances. Still, in cases when there is a rigid thickness requirement, work with us early on to make sure that this is achieved reliably.
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17hExcellent work