SMD can be easier than PTH even, and BGAs are easier than QFN and QFP. SMD parts self-align and can be reworked regardless of the number of pins
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Replying to @whitequark
i see how do i get started with these parts, what equipment do i need
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Replying to @alt_kia
i use stencils and vapor phase soldering personally but that's overkill; solder paste in a syringe and a hot air gun are sufficient for many jobs. i suggest getting junk PCBs and trying to rework random components on them without turning the PCB into char or melting stuff
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Replying to @alt_kia
using phase transition of a fluoropolymer liquid (Fluorinert) as a sort of thermostat. instead of an IR oven with a PID controller you rely on the fact that latent heat of condensation >> heat transferred by convection and radiation, and...
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Replying to @whitequark
ahh nice. what kind of machine do you use for that?
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Replying to @alt_kia
I cobbled together a machine from the cheapest electric pot I found in a store in HK, a PID controller I had lying around, some metal junk as a base, and a solid state relay. search my earlier tweets it has photos
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Replying to @whitequark
so you put the board like, above the liquid and let the vapour just condense on it?
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exactly. and it has such a low affinity to PCBs and components that when you turn it off and let it cool the liquid returns back to the pool below all by itself, you just need to shake it gently when lifting.
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