| February 23, 2011
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Press-in Fasteners are a simple, yet very important element of printed circuit assembly. They are self-clinching fasteners that permit the mounting of heavy structures onto relatively thin circuit board substrates.
When inserted properly, and in the correct location, they provide an elegant solution to various chassis, heat sink, stiffener, and other hardware mounting demands.
The potential problem is in the nature of their mounting. When improperly installed, they can easily damage the circuit board and cause all sorts of issues ...
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Although soldering is one of the oldest know joining techniques, manual or hand soldering is still a process highly dependent upon individual operator skill.
And, while soldering and rework have become increasingly automated, we nevertheless operate in an imperfect world, and defects in the mass soldering process will occur.
Faulty solder joints resulting from improper soldering or rework remain a major cause of equipment failure. Thus, the importance of using techniques that provide high-quality results, while exposing the solder connection to the least ...
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It's not unusual for circuit boards that have been fabricated to require additional milling to reduce thickness on certain areas of the circuit board. This necessary milling is nominally completed by the circuit board fabricator prior to board assembly.
Occasionally, the milling operation is either missed, or not milled to the desired thickness, and often, we have been asked to perform the milling operation on assembled circuit boards.
We received a shipment of circuit boards that were outside of the specified thickness tolerance (too thick) along the outer edges of the circuit ...
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Trivia
See the answer below.
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Quote of the Week
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