Process Measurement Evaluating Finishes Using SERA
نویسندگان
چکیده
Over the years, the hot air solder leveling (HASL) process has been established as a primary surface finish for circuit boards. It still remains the most solderable, and arguably the most durable, surface finish. Recent developments in PCB manufacturing have highlighted some problems with these finishes, creating an urgent need for solderable, durable, and inexpensive alternative surface finishes that would be environmentally friendly and would yield a planar surface. A number of these finishes have been tested and new ones are introduced in trade literature from time to time.
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