{"id":57037,"date":"2024-10-31T15:20:00","date_gmt":"2024-10-31T14:20:00","guid":{"rendered":"https:\/\/fhi.nl\/nieuws\/tombstoning-trouble\/"},"modified":"2024-10-31T15:22:10","modified_gmt":"2024-10-31T14:22:10","slug":"tombstoning-trouble","status":"publish","type":"news","link":"https:\/\/fhi.nl\/en\/news\/tombstoning-trouble\/","title":{"rendered":"Tombstoning Trouble"},"content":{"rendered":"
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\n\t\t\t\t\tTombstoning Trouble\t\t\t\t<\/h1>\n\n\t\t\t\t
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\"\ud83c\udf83\"<\/span> TechnologyThursday meets Halloween: The Tombstoning Effect in SMD Components \"\ud83d\udc7b\"<\/span><\/div>\r\n<\/div>\r\n
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\"\ud83c\udf83\"<\/span>Happy Halloween to all PCB enthusiasts and PCB designers!\"\ud83c\udf83\"<\/span><\/div>\r\n
What could be more fitting on this spooky day than a phenomenon that makes tiny components stand up as if moved by a ghostly hand?<\/div>\r\n<\/div>\r\n
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\"\ud83d\udc7b\"<\/span> We're talking about the tombstoning. In PCB assembly, this term refers to the one-sided uprighting of small or lightweight two-pole SMD parts during the soldering process. These then resemble tombstones in an old cemetery. The result: the lifted side of the part has no electrical contact and the circuit is open.<\/div>\r\n<\/div>\r\n
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\"\ud83d\udd0d\"<\/span>How does tombstoning happen? Not by magic, of course, but by physics. The surface tension of the molten solder on a solder pad attracts the part and can raise it up to 90\u00b0 from the opposite solder pad.<\/div>\r\n<\/div>\r\n
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\"\ud83d\udca1\"<\/span>How can the 'tombstone effect' be avoided? In addition to the soldering process, the PCB layout, the geometry of the connection pads, placement of the components, vias or labeling have a major influence on this soldering defect.<\/div>\r\n<\/div>\r\n
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\"\ud83d\udee0\ufe0f\"<\/span>To ensure that tombstoning remains just a Halloween joke, here is our guide with useful tips and a video for production-oriented design: https:\/\/www.eurocircuits.com\/pcb-assembly…\/tombstoning\/<\/a><\/span><\/div>\r\n
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#eurocircuits<\/a><\/span> #electronics<\/a><\/span> #PCB<\/a><\/span> #PCBDesign<\/a><\/span> #pcbmanufacturing<\/a><\/span><\/div>\r\n<\/div>\t\t<\/div>\n\t<\/div>\n<\/div>\r\n\t
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