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Fresh PCB Concepts: PCB Plating Process Overview

12/12/2024 | Team NCAB -- Column: Fresh PCB Concepts
In this installment of Fresh PCB Concepts, Mike Marshall takes the helm stating: PCBs have been the platform for the interconnection of electronic components for decades. Because of process costs and other constraints, such as mechanical properties or size limitations of the alternatives, PCBs will remain the standard low-cost interconnection technology. Rapidly increasing performance and functionality requirements of wireless and high-speed devices have challenged the development and implementation of new manufacturing solutions.

Has the Time Finally Come for Tin-nickel Plating?

12/09/2024 | Marcy LaRont, PCB007 Magazine
In the 1980s, Electrochemicals, Inc. (now Electrochemical Products) made a significant shift from furniture and industrial goods to electronics and manufacturing. During this journey, a tin-nickel plating alloy was developed. In 1984, Mike Carano, a young engineer, published a paper on tin-nickel plating alloy, but after some initial attention, the plating solution fell into obscurity. Today, PCB fabrication looks largely the same, yet changes are afoot, chiefly due to the demands for very fine feature capability on printed circuit boards, as well as environmental sustainability. So, in this fascinating conversation with Mike Carano and Happy Holden, we take another look at tin-nickel and its advantages in both performance and sustainability.

Exploring Advanced PCB Final Finishing: DIG, RAIG Technologies

10/24/2024 |  Rich DePoto, Uyemura
In this interview, Rich DePoto of Uyemura provides a deep overview and explanation of Reduction-assisted Immersion Gold (RAIG) and direct immersion gold (DIG) technology, and their applications and benefits when compared to traditional final finishes. He delves into the intricacies of electroless nickel corrosion and “black pad,” exploring its causes, consequences, and the measures that can be taken to mitigate this problem. This comprehensive overview will provide insight toward sound decision-making for those operating in environments where perfect process control is a challenge.

Connect the Dots: Designing for Reality—Pattern Plating

10/16/2024 | Matt Stevenson -- Column: Connect the Dots
In the previous episode of I-Connect007’s On the Line with… podcast, we painted the picture of the outer layer imaging process. Now we are ready for pattern plating, where fabrication can get tricky. The board is now ready to receive the copper traces, pads, and other elements specified in the original CAD design. This article will lay out the pattern plating process and discuss constraints in the chemistries that must be properly managed to meet the customer's exacting manufacturing tolerances.

Marcy’s Musings: Destination Metallization

10/17/2024 | Marcy LaRont -- Column: Marcy's Musings
To reach your intended destination, you must have some form of pathway or route upon which to travel. It is much the same with the metallized traces and features on a printed circuit board. They are how electrical signals and power are carried from one point to another in an electronic device. Copper is the most prevalent metal conductor, but other metals are also used to a lesser degree, including gold, silver, tin, and palladium.
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