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What is finished copper thickness?
Many designs require specific copper thicknesses to accommodate the current requirements of the design. 1 oz copper (~35µm thick or 1.4 mils) — Standard internal layer copper thickness for “standard construction product for 1 oz and 2 oz finished copper weight selections.
What is plating thickness?
In the metal finishing industry, the thickness of a coating can dictate the functionality, appearance and cost of a final product. Coating thicknesses are typically found in the range from 0.1 to 85+ microns, depending on the application, and it is imperative that the thickness of coatings are monitored and controlled.
What is the thickness of a via plating?
From memory, not very thick, typically half the surface thickness. Very small vias will be a little worse. If you’re really pushing a lot of current then I’d be tempted to either go for filled vias which are expensive or else solder some pins in which will add to the production cost.
What is the thickness of electroless nickel plating?
An electroless nickel coating is uniform; it will not build up on corners or projections. The deposited metal layer has an even thickness over all surfaces of the component regardless of its shape; this cannot be achieved with electrodeposited coatings. Typical thickness of electroless plating can be as thin as .0005″ and up to.010″.
How much copper is in a via plating?
Because of the plating process, the vias are not usually uniform thickness either so keep that in mind. Assuming 2oz outer layers and 20mil vias at 1mil plating, that is 2*pi*r = 2*3.14*10 = 62.8 mil of copper in the via.
What’s the hardness of a coating of plating?
Coating thicknesses for engineering uses vary from 0.0005 inch to 0.0015 inch (0,012 mm to 0,038 mm) with hardness from approximately 48 to 52 Rockwell C. When the plating is heat treated approximately 750°F (400°C) for one hour, the obtainable hardness varies from 58 to 64 Rockwell C.