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Epec's Blog | Electronics Manufacturing Solutions


Common PCB Fabrication Problems: Plating Voids

Written by Al Wright
Posted on July 30, 2013 at 3:35 PM

Plated through holes are the holes in a printed circuit board (PCB) with copper coated walls. These holes allow electricity to be carried from one side of the circuit board through the copper in the hole to the other side of the board. For any printed circuit board design of two or more circuitry layers, plated through holes form the electrical interconnection between the different layers.

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Proper Handling of ENIG and Immersion PCB Surface Finishes

Written by Chris Perry
Posted on March 21, 2013 at 10:35 AM

Printed circuit boards (PCBs) with immersion finishes such as electroless nickel immersion gold (ENIG), immersion tin, silver, and OSP are appealing because they are lead-free. However, if handled improperly, these materials are susceptible to oxidation and corrosion from exposure to moisture and humidity. This oxidation causes dewetting after soldering, which can lead to poor joints at assembly and ultimately lead to failure of the board.

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