PCB Design

Por que existem lágrimas nas placas de PCB?

There are primarily two reasons to use teardrops:

  1. It avoids a pocket (where the trace meets the pad) that could collect acid from the PCB etching process which would later do bad things.
  2. It reduces mechanical & thermal stress resulting in less hairline cracks in the trace.

That being said, in professionally made PCB’s teardrops are rarely needed. It’s almost more of an aesthetic thing than a solution to a real problem. I’ve done many boards with and without teardrops and I have yet to notice a difference. In my opinion, they are more trouble than they are worth.

consulte Mais informação: O Guia Essencial para Traços de PCB: Entendendo o básico

#PCB Design

OliverSmith

Oliver é um engenheiro eletrônico experiente, especializado em design de PCB, circuitos analógicos, sistemas embarcados, e prototipagem. Seu profundo conhecimento abrange a captura esquemática, codificação de firmware, simulação, disposição, teste, e solução de problemas. Oliver se destaca em levar projetos desde o conceito até a produção em massa usando seus talentos de design elétrico e aptidão mecânica.

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