Tag Archive | "PCBs"

Cleaning Solder Flux Residue

Q. I am seeing a white powder around solder joints on PCBs. We use Detergent 8 for cleaning. Do you know why this is happening and how to stop it?

A. The most likely source of white powdery residue around solder joints on PCBs is the formation of insoluble metal salts from the solder flux. Lead or other solder metal rosinate, abietate, or other organic acid salt tends to form when soldering temperatures are too hot. Using any water based cleaner …

Read the full story

Posted in Citrajet, Citranox, Detergent 8, ElectronicComments (0)