ENIG

Sunstone Circuits, the printed circuit board (PCB) fab supplying all of the manufacturing services for PCB123, , has added an in-house Electroless Nickel Immersion Gold (ENIG) process to its Mulino, Oregon manufacturing facility. The semi-automated line is custom manufactured by RK Fabrication and will be utilizing chemistry by DOW Electronic Materials. By adding this process in house, Sunstone will be able to decrease the minimum lead time from 1 week to a 2 day minimum.

PCB123 users can now make direct use of ENIG processes on their PCB123 designs during the ordering process. ENIG options will be available to PCB123 customers as they finalize their order online at the Sunstone Circuits OneQuote form.

What is ENIG?

Electroless nickel immersion gold (ENIG) is a type of surface plating used for printed circuit boards, in which elecroless nickel is then covered with a thin layer of immersion gold. The gold protects the nickel from oxidation. ENIG is a costlier finish, but offers the best characteristics for printed circuit boards. ENIG offers excellent surface planarity, good oxidation resistance, and is useful for membrane switches and contact points.