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Dendrite Growth PCB Contamination is responsible for around 15% of failures in printed circuit board assemblies (PCBAs). Ionic contamination, in particular, can give rise to several issues that result in faulty PCBs.
19 mar 2015 · Dendrites are most typically seen when pure tin is used for plating and lead free solder is used for assembly. Alloying is the best solution to this problem. Tin/Lead solders don't exhibit this behavior at a troublesome level because the soft lead tends to lower the mechanical stress that is felt by the joint.
I am looking for EU based PCB manufacturer. It is just a hobby for me, so I need to be able to order in small quantities. Also an easy to use WebUI and reasonable pricing are important.
5 wrz 2018 · Hello to everyone, I would like to know what factors affect in the apparition of dendritic growth in PCB. I have this question because I'm trying to use Printed Spark gaps as ESD protectors and considering that the electrodes will have to hold an intense electric field, this problem came to me.
PCB end-users should review their designs and the environment in which the boards will be used. Based on positive findings, specifications should be modified to include adherence to IPC-5704. This will minimize the risk of latent field failures due to ionic contamination-related dendrite growth.
22 wrz 2020 · Solder joint corrosion causes. This month we illustrate dendrites and corrosion on board assemblies. The example in FIGURE 1 is straightforward. Saltwater was found on the surface of the metal board. It caused intermittent operation of the LED before failure at 25 meters.
7 paź 2015 · Absolutely clean PCB gets dirty in approx. 60 seconds. Further inspection led to a single conclusion - DENDRITES (or ionic contamination). I've thrown away all my chemicals and ordered a new set of blank PCB material.
