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  • Author Author: aemarconnet
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Shaky hands and precision soldering do not mix

aemarconnet

For prototyping purposes i was hoping to try my hand at soldering some leads to a super-cap charger from TI. Unfortunately the package is a 16VQFN and my feeble attempt at tacking leads onto these 0.2MM pitch pads did not end well. I think the photo below gives a good indication of of the size of the package. (keep in mind my hands are not HUGE)

 

image

 

After a little over an hour of effort trying to solder leads to this package i gave up. I will have to build a breakout PCB for this, but it seems my solder paste is expired and i will need some more single-sided, copper-plated, PC board. The order is placed on amazon and i should have them soon this week.

 

Anybody have recommendations for soldering these small packages? The only re-flow i have done is repair to electronics like the XBox 360 GPU (Red Ring of Death).

 

Wish me luck!

Alex

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  • in reply to DAB

    The eyesight is enough .. let alone adding shaky hands or arthritis.

     

    I had to replace a smd chip the other day, and despite having the appropriate hot air smd tool, it was still strange to rely on heating and solder under the leg to make a good joint.

    These chips are worse in that the finished product is hidden.

     

    Let us know how you get on....

     

    Mark