New Equipment | Education/Training
IPC A-600H Acceptability of Electronic Assemblies. The IPC-A-600, "Acceptability of Printed Boards " is the most widely used published specification on printed wiring boards. This specification has set the standard for rigid printed boards in terms o
New Equipment | Education/Training
IPC A-600H Acceptability of Electronic Assemblies. The IPC-A-600, "Acceptability of Printed Boards " is the most widely used published specification on printed wiring boards. This specification has set the standard for rigid printed boards in terms o
Electronics Forum | Fri Oct 15 11:03:50 EDT 2010 | hegemon
Well, we got the baking part right at least. I would think that would help to rule out the barrel cracks allowing moisture escape. Plating too thin makes sense to me. In any case, do you think barrel cracking would be observable on a bare PCB?
Electronics Forum | Thu Jan 12 14:17:07 EST 2012 | blnorman
How are the vias failing? Barrel crack?
Industry News | 2012-04-10 14:47:49.0
The Balver Zinn/Cobar Group announces that its SN100C Wire Solder and Cobrush flux applicator were demonstrated at the first Hand Solder Competition at the recently held IPC APEX EXPO in San Diego.
Industry News | 2016-05-16 20:44:43.0
Inovar, Inc., a full-service EMS provider, announces that it recently purchased and installed an XD7600NT Ruby X-ray Inspection System with X-Plane™ technology from Nordson DAGE.
Technical Library | 2020-12-07 15:26:06.0
Temperature cycling testing is a method of accelerated life testing done to PCCs that are exposed to normal operation temperature variations over its lifetime. During the testing, intermittent "open" failures can first occur at the hot and cold extremes of the test, exposing weaknesses in the design and assembly. A poor/weak solder joint fatigues, a via trace or barrel cracks, loose connections or a component fails all causing an intermittent open. When not at extreme temperatures, the PCC assembly relaxes, the "open" closes creating electrical connectivity. If you are monitoring the PCC under test in-situ you will know that an intermittent failure has occurred, and the test could be stopped for inspection. If in-situ monitoring was not implemented, you would not know if there were intermittent failures or not. The PCC gets powered up and works fine at room temperature.
Technical Library | 2015-12-23 16:57:27.0
The onset of copper barrel cracks is typically induced by the presence of manufacturing defects. In the absence of discernible manufacturing defects, the causes of copper barrel cracks in printed circuit board (PCB) plated through holes is not well understood. Accordingly, there is a need to determine what affects the onset of barrel cracks and then control those causes to mitigate their initiation.The objective of this research is to conduct a design of experiment (DOE) to determine if there is a relationship between PCB fabrication processes and the prevalence of fine barrel cracks. The test vehicle used will be a 16-layer epoxy-based PCB that has two different sized plated through holes as well as buried vias.
This video describes the IPC A-600 training and certification program. The IPC A-600 specification is a set of acceptability specifications for printed circuit boards. These standards determine the acceptance and reject criteria for printed wiring bo
This video describes the IPC A-600 training and certification program. The IPC A-600 specification is a set of acceptability specifications for printed circuit boards. These standards determine the acceptance and reject criteria for printed wiring bo
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Other courses related to electronics manufacturing and assembly
SMTnet Express, December 23, 2015, Subscribers: 23,927, Members: Companies: 14,845, Users: 39,621 PCB Fabrication Processes and Their Effects on Fine Copper Barrel Cracks Edward Arthur, Charles Busa, Melissa Durfee, Chad Gibson, Wade Goldman P
