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What is the solder paste used on Nucleo board

Question asked by Aurélien f on Nov 16, 2017
Latest reply on Nov 16, 2017 by Aurélien f

Hello,

I have made my custom boards inspired from nucleo board l073 but i cannot reach the same power specifications as the nucleo board. Indeed, with the same firmware, on the nucleo board, i consume 3uA whereas on my custom board i'm around 30 uA. I have also noticed when i put and push with my finger the stm32, current consumption increases or decreases ... So, i'm suspecting my solder paste that is a cheap chinese one Sn63 Pb37.

If you have any ideas of how nucleo boards are made, feel free to share

 

Thank you very much.

 

Regards,

 

Aurélien

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