Quanta folga você deve incluir nos furos dos componentes do furo passante?

Is there a general rule as to how much clearance you should add to through-hole components' holes to allow them to fit easily? Por exemplo, if I have a component with 1mm pin diameter, what should the diameter of the holes for it's pads be?

Assembléia PCB, PCB Design
dezembro 13, 2023

0.1mm is too tight toward the high end if you’re designing for automatic insertion of parts with bent leads.
Geralmente 0.8milímetros is okay for most leads except fat diode leads, for which you can use 1.0mm.
Usually 1.3mm holes are specified for 1mm pins (for example on terminal block datasheets).
Sometimes 1.5mm which is really, really loose.

If the leads are flat or square rather than round, you can go a bit tighter on the diagonal dimension, assuming a round hole. For really flat leads, it’s better to specify a slot.

If you’re using some kind of special part, such as a staked connector or press-fit part, pay attention to the tolerances.

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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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