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Lead free PCB assembly
How to distinguish between lead-free PCB assembly and lead PCB assembly? 


How do we determine if a printed circuit board is lead-free when we receive it? Due to the fact that many customers require PCB assembly that complies with RoHS standards. We will discuss this issue from the following aspects.
 


 Appearance differences

 

For experienced workers, it is easy to distinguish between PCBs soldered with lead-free solder or leaded solder. Because the colors of solder joints are different: lead containing solder appears bright white, while lead-free solder appears darker and slightly yellow.
 


 Compositional differences

 

Lead containing solder typically contains 70% tin and 30% lead. Lead free solder typically contains 96% tin, 3% silver, 0.5% copper, and small amounts of other elements.
 


 usage variance

 

Lead containing solder is only used for products that allow lead content. But lead-free solder can be used for lead-free PCB assembly and can be used for most electronic products. Lead free solder complies with RoHS and REACH regulations and can be exported to Europe and the United States.
 

By introducing the above aspects, when you receive a PCB, you can quickly identify whether it is a lead-free PCB.









        
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  • The difference between lead and lead-free PCB assemblyThe difference between lead and lead-free PCB assembly
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  • 6 important factors for lead-free PCB assembly6 important factors for lead-free PCB assembly
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  • Why does lead containing PCB assembly still exist in the industry?Why does lead containing PCB assembly still exist in the industry?
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  • Precautions for choosing lead-free PCB assembly servicesPrecautions for choosing lead-free PCB assembly services
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  • Material characteristics of replacing lead in PCB assemblyMaterial characteristics of replacing lead in PCB assembly
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            Haibo is an expert in the field of FPC/PCB manufacturing and surface mount assembly in China. Since our establishment in 2017, we have been providing high-quality PCBs to over 1000 customers worldwide. Our factory has passed ISO14001, ISO9001:2015, TS16949, and ISO13485:2016 certifications. We are one of the most trusted small and medium-sized FPC/PCB manufacturers in China.
            
    
            
    
                
      
                    
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