Archive for November, 2012

When ENIG Doesn’t Solder.

Sunday, November 25th, 2012

One of the misconceptions about Electroless Nickel Immersion Gold (ENIG) is that it remains solderable for an unlimited amount of time. This misunderstanding is based in the fact that gold is a noble metal. Noble metals are metals that are resistant to oxidation and corrosion. Hence the belief that ENIG remains solderable since gold is the metal that we see. Some people in the electronics industry are surprised when they learn that ENIG has a solderable shelf life of (more…)

Compliance Requirements for 2013.

Saturday, November 10th, 2012

Over the past few years the printed circuit board industry has had numerous regulatory and compliance initiatives forced upon it. Some of these may have been well intentioned but the unintended results have yet to be realized. For example, many of us are familiar with RoHS, Restriction of Hazardous Substances directive. The directive restricts the use of several substances by manufacturers. The only substance restriction that really affected the printed circuit board industry was Lead. Tin-Lead solder was used in the industry for decades. RoHS sought to remove Lead from the electronics industry. Many people recall how harmful Lead in gasoline and paint proved to be to both the environment and the human condition. Removing Lead from electronics would sound like a good idea. Right? (more…)