Produkcja PCB

Jak zminimalizować adsorpcję wilgoci na płytce drukowanej 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.

Czytaj więcej: Kompleksowy przewodnik po przewodności cieplnej FR4

#Produkcja PCB

Olivera Smitha

Oliver jest doświadczonym inżynierem elektronikiem specjalizującym się w projektowaniu płytek PCB, obwody analogowe, systemy wbudowane, i prototypowanie. Jego głęboka wiedza obejmuje ujęcie schematyczne, kodowanie oprogramowania sprzętowego, symulacja, układ, testowanie, i rozwiązywanie problemów. Oliver specjalizuje się w przeprowadzaniu projektów od koncepcji do masowej produkcji, wykorzystując swoje talenty w zakresie projektowania elektrycznego i zdolności mechaniczne.

Najnowsze posty

What Is a PCB Netlist? Wszystko, co musisz wiedzieć, jest tutaj

In the world of printed circuit board design and manufacturing, precision and accuracy are paramount.

1 week ago

What Is Solder Wetting and How to Prevent Poor Wetting?

Soldering is a cornerstone technique in electronics assembly, it's used to connect electrical pieces and

4 weeks ago

7 Critical Techniques to Improve PCB Thermal Management

dzisiaj, electronic products are both compact and lightweight while performing a variety of functions. To…

1 month ago

What Is BGA on a PCB? A Complete Guide to Ball Grid Array Technology

As technology continues to advance in the electronics industry, packaging remains one of the key

2 months ago

How to Create a PCB Drawing: A Step-by-Step Guide for Beginners

Bringing your electronic ideas to life begins with PCB drawing, which is the process of

3 months ago

8 Leading PCB Design Software: A Comprehensive Comparison

Printed Circuit Board design is one of the most significant processes in electronics production. Deciding

3 months ago