Rosin is a common additive in
lead-free solder bars, so rosin will not cause electrical conductivity. It is an insulator itself, but the additive content of lead-free solder bars contains rosin but there are other active substances. Lead-free solder bars Excessive metering of some active substances may cause leakage.
Why do many domestic electronics factories use cleaning agents to clean the surface after soldering lead-free solder bars? The reason is to remove the residue after soldering to ensure the safety of the electronic board. It is soldered by dip soldering, and there is a layer of white dirty marks on the terminal after soldering, which is difficult to remove. I would like to know if there is a way to deal with the dirty marks after soldering with lead-free solder bars?
If we often want to remove the dirt on lead-free solder bars, we must first understand how the dirt is produced and what substance it is, so that we can fundamentally remove it. From the above questions, we can determine that the dirt comes from self-flux. It is generally believed that the dirt of the flux is cleaned with a cleaning agent, but the terminal above the wiring cannot be completely cleaned with a cleaning agent, and it will cause harm to the terminal. The best way for lead-free solder strips is to use industrial alcohol or special cleaning board Just water to wipe it off.
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