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Lead free PCB assembly
Material characteristics of replacing lead in PCB assembly 


Nowadays, solder manufacturers are still researching and finding the most suitable metal to replace lead. To achieve two simple goals: good weldability and low cost. The following are the characteristics to consider when choosing lead alternatives.
 


 Global availability

 

This metal/alloy must be available worldwide, easily obtainable in most countries, and its quantity must be large enough to meet global demand.
 


 Recyclable

 

Alternative alloys should also have recyclability. Therefore, it is best not to add too much metal to the formula, otherwise the recycling process will be too complicated and the recycling cost will be too high.
 


 non-toxic

 

The problem with lead is that it is toxic and harmful to the environment. Therefore, when we try to find alternatives, we need to find something non-toxic.
 


 Compatible with the electronics industry

 

Solder is widely used in the electronic and circuit board assembly industry. For example, SMT assembly, PTH assembly, manual soldering, and maintenance. Therefore, alternative alloys must be able to meet the needs of all these fields.









        
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