Produzione di PCB

Come posso ridurre al minimo l'assorbimento di umidità sul PCB FR4?

Adsorption is a chemical process that occurs on the surface and can affect surface resistivity. Since you are talking about PCB mass, it sounds like you are actually talking about moisture absorption which is diffusion into the bulk of the material.

  • If there are any fixing holes, it will be impossible to eliminate them completely.
  • I have some products where the use of this sealant is mandated (they are in ship-board aircraft). I only mention this to show there are solutions, if there is a requirement for complete sealing.
  • Simply covering most of the PCB with solder mask will reduce the absorption of moisture.
  • From a system point of view, other than the bare PCB, it would be important to avoid components that absorb moisture- which would include plastic-packaged parts, but especially polyamide (Nylon) fasteners etc. which can absorb an enormous amount of moisture (as much as 10%)- enough to cause large dimensional changes as well as mass changes.

Leggi di più: Una guida completa alla conducibilità termica FR4

#Produzione di PCB

Oliver Smith

Oliver è un ingegnere elettronico esperto specializzato nella progettazione di PCB, circuiti analogici, sistemi integrati, e prototipazione. La sua profonda conoscenza spazia dall'acquisizione di schemi, codifica del firmware, simulazione, disposizione, analisi, e risoluzione dei problemi. Oliver eccelle nel portare i progetti dall'ideazione alla produzione di massa utilizzando il suo talento nella progettazione elettrica e la sua attitudine meccanica.

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