Hi Folks, Up until today, I’ve been fairly successful in soldering SMD parts for my prototypes but it looks like I’ve got a short in one of the QFN32 parts. How do you place them? I guess my hand shook a bit when I was placing the thing and now one of the Vcc pads are shorted to a GND pin. I’ve…

I use ChipQuik to remove chips: http://www.chipquik.com/ Leon

I am no expert in soldering tiny parts with lots of pins, but I have soldered a few components with 0.4 and 0.5mm pitches, some as high as 100 pins, onto Schmartboards. I know the Schmartboard is specifically designed to help you solder these things easily, but I only ever get the “non-EZ” versions…

Tacking down two opposite corners and then drag-soldering with plenty of gel flux works for me. Leon

leon_heller: Tacking down two opposite corners and then drag-soldering with plenty of gel flux works for me. Leon Ditto, except that I use liquid flux.

I’ve found that all SMD parts are easy to get off with hot air - easier than pin-through-hole - less solder to melt. I’ve only removed leaded-type packages, not a leadless one, but I can’t imagine a leadless package is all that hard to get off with hot air. My challenge tonight is to solder an LQFP…

the QFN package seems be ok for hand soldering. THE LGA or BGA is the hard part. I don’t even want to give a try on LGA and BGA parts.

Hey, I’m about to start soldering QFN32 so I’ll keep you posted on my experiences. I’m going to be ordering the solder station / hot-air combo for $175 off of sparkfun this weekend. My IC is the AT86RF230. Infact, I created my own breakout board on batchpcb.com and they just arrived. I’ll keep you…

I used hot air removing parts before, curious can it be used for soldering? Anyone tried?

funnynypd: I used hot air removing parts before, curious can it be used for soldering? Anyone tried? Greetings (No Name Supplied), Sure! Its my prefered construction method for PCB prototypes. I use an ordinary heatshrink gun after placing the parts on solder paste hand applied from a syring…

How do you place QFN32 parts?

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funnynypd October 27, 2007, 1:29pm 6

liquid flux or solder paster should both work.

Clean does take some time.

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How do you place QFN32 parts?

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