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Electronics => Electronics => Topic started by: z.s.tar.gz on April 14, 2010, 03:27:52 PM

Title: Soldering QFN by hand - can it be done? [closed]
Post by: z.s.tar.gz on April 14, 2010, 03:27:52 PM
I recently ordered a new mcu that I thought was tqfp but I apparently I clicked on the qfn version instead.
Can qfn be soldered by hand? I have a hot air rework station too if that is the only way.
Title: Re: Soldering QFN by hand - can it be done?
Post by: tim_wang on April 14, 2010, 04:04:28 PM
Read this tutorial on using a hot air station to solder QFN: http://www.curiousinventor.com/guides/Surface_Mount_Soldering/QFN (http://www.curiousinventor.com/guides/Surface_Mount_Soldering/QFN). Good luck!
Title: Re: Soldering QFN by hand - can it be done?
Post by: Admin on April 20, 2010, 10:06:22 AM
Set the hot air gun to blow as low as possible. Use solder paste, not regular solder.

If the chip blows away, the air is set too high.

If the PCB starts turning black, you're definitely doing it wrong :P

(I hate soldering QFNs, such a pain)
Title: Re: Soldering QFN by hand - can it be done?
Post by: z.s.tar.gz on April 21, 2010, 11:41:04 AM
Mouser sent me the correct one (for free!) so I guess this is closed.