How do hdi printed circuit boards resist corrosion?
hdi printed circuit boards resist corrosion
Corrosion is one of the biggest enemies of anything made of metal. It affects everything from cars to satellites orbiting earth and even hdi printed circuit boards. Corrosion is the result of oxygen combining with the metal, this results in oxidation and over time breaks down the board. The good news is that you can help to keep your hdi printed circuit board corrosion free by keeping it clean and dry. Taking these simple steps does not guarantee that your pcb will not be affected by corrosion but it can help to extend the life of your board. Bittele Electronics can provide you with a high quality pcb that will stand up to the test of time and keep it free from corrosion.
The main thing to look for when choosing a pcb is the materials used. Copper and other base metals corrode fairly easily, while noble metals and certain alloys are highly resistant to corrosion. The etching process is also important to consider when purchasing a pcb. Using a hard copper process will allow the copper to be more resistant to corrosion, but will increase the cost of your pcb significantly.
In addition to using different types of metals in your hdi printed circuit boards, the process of manufacturing these boards is also important. The etching process must be controlled carefully to avoid damaging the board or creating holes that can cause shorts in your circuit board. During the etching process, the pcb will be exposed to various acids and chemicals, which will affect its performance over time. It is important to know the chemistry involved in each etching process before selecting the right one for your board.
How do hdi printed circuit boards resist corrosion?
Other factors that can affect hdi printed circuit boards are the number of sequential laminations, materials used and how they are drilled. A typical HDI board has multiple sequential laminations to prevent shifting and breaking during drilling. The core material may be FR4, metal or fiberglass and is coated with a finish such as ENIG, HASL, immersion tin or gold. It is important to preheat the core material before applying the dry resist as this will allow for a more consistent application of the resist. This will help prevent air entrapment under the dry film resist, which can lead to the formation of corrosion.
When making a hdi printed circuit board, it is important to use a manufacturer that has experience working with these types of boards. Having an experienced team will make sure that the boards are assembled correctly and will reduce the chance of errors during the assembly process. It is also important to use a company that uses a semiconductor class 100 clean room for their fabrication processes. This will ensure that the hdi printed circuit boards are as high-quality as possible. Having a high-quality pcb will not only improve the performance of your device but will also extend its lifespan.