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Soldering surfaces for printed circuit boards, part 3: electroless tin

For the Soldering surface immersion tin (chem. Sn) or ISn (immersion Tin), a 1 to 1.3 µm thin tin layer is deposited on the copper surfaces in a wet chemical process. According to IPC-4554, this is ≥ 0.6 µm pure tin (usable tin). The tin layer forms a planar soldering surface and thus provides the …

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Interview with Chief Energy Manager Thomas Hojenski: Manufacturing PCBs? There’s a sustainable way to do it!

In Germany, industry accounts for around 31 percent of annual energy consumption. If the energy revolution is to succeed, companies must accept their responsibilities by reviewing and auditing consumption and looking for ways to optimize it. With rising energy prices, this makes sense not only ecologically, but also economically. In addition to consumption, there is …

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Solder Surfaces for Printed Circuit Boards, Part 2: Electroless Nickel-Gold

The solder surface electroless nickel-gold (chem. NiAu) is also called ENIG (Electroless Nickel Immersion Gold). In a wet chemical process, a 3 to 6 µm thin layer of nickel (phosphorus-doped) is first deposited on the copper surfaces of the component connections. The nickel layer forms a barrier for the 0.05 to 0.125 µm thin gold …

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Soldering surface Printed circuit boards

Solder surface or printed circuit board finish, Part 1: Function and properties

The solder surface, final surface or also called PCB finish, is a thin metallic or organic layer that the PCB manufacturer applies to the copper surfaces of the component connections (solder pads). The solder surface covers the exposed copper on the PCB and preserves the solderability within the guaranteed storage period of the PCBs under …

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The stress test showed how agile and mobile our company is

The printed circuit board manufacturer KSG has mastered the past 18 months with entrepreneurial skill and customer service. The business situation is pleasing and the team has grown to meet the challenges. “We learned three things in the Corona crisis,” says CEO Margret Gleiniger. “Firstly, that we can change ad hoc and that changes are …

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