Proper Tecniques for Printed Circuit Board Cleaning
Printed Circuit Boards are delicate pieces of electronics and it is important that they be cleaned and maintained properly. Though many may feel that dusting a PCB is sufficient for removing potentially harmful build up, there are a few different methods for removing sediment that can help extend the life and improve performance of a PCB.
The first and most common item used for cleaning PCBs is canned air. This highly compressed air is great for pinpointing dust and particulates without damaging or disturbing the rest of the circuit board in the process. Using a dust rag or other, harsher cleaning agent can dislodge connections and can cause major issues down the road. Rough or abrasive cleaning can break connections and damage the circuit board to the point of replacement.
The next cleaning agents to consider are solvents. Sometimes dusting is simply not enough to remove particulates and other dust that is on a PCB. Solvents can help to remove large deposits like corrosion, rust, solids that have formed on the surface, and other issues that can damage and even stall the function of a PCB. When choosing a solvent it is always important to choose a product that has vapor rinse. This will help to remove all residue that is left after soldering.
There are a few different ways that residues can be removed, the first is submersion of the PCB in the proper solvent. For soldering residue, water based submersions work best. It may also be sufficient to use air based cleaning to remove these harmful build up. For tougher residues using a solvent can help.
Ultrasonic cleaning can help to dislodge residue without much contact. The less users have to touch the PCB to remove residue the better. Extensive handling can cause damage without truly cleaning the PCB. Because these circuit boards are so small and delicate, it is important that precision is used to remove any dirt or other sediment. Taking the time to find the proper solvent for the issue at hand can save time and money in the long run and can insure a clean and well functioning PCB.