AVR-Chat

Try to have a read of Silicon Chip Issue 234, March 2008.
 
I have used the article by Jim Rowe, titled "How to Solder Surface Mount
Devices", as a basis for the reflow Soldering of protoypes.
 
It took a few tries to work out the correct amount of paste to use, as well
as the correct maximum temperature. (can provide further details)
 
For those of you from Oz:
I got the oven from Myers and found a good place in Penrith (NSW) that has a
range of solder pastes which makes applying the paste easier than using the
product mentioned in the article.
 
Cheers
        Tim


 



--- On Sat, 1/24/09, Kathy Quinlan <kaqdialup@iinet.
<mailto:kaqdialup%40iinet.net.au> net.au> wrote:

From: Kathy Quinlan <kaqdialup@iinet. <mailto:kaqdialup%40iinet.net.au>
net.au>
Subject: [AVR-Chat] WTF have I got myself into ?
To: AVR-Chat@yahoogroup <mailto:AVR-Chat%40yahoogroups.com> s.com
Date: Saturday, January 24, 2009, 3:02 AM

Hi All,

OK a customer has asked me to solder up some PCB's, no problem, apart 
from the main part a DSP in a 40 lead QFN with centre ground pad this 
sucker is 6mm Sq with 0.5mm pad centres, has anyone ever soldered one of 
these ? I am planning on using solder paste and hot air, the PCB's were 
designed by me for mass production ie reflow soldering not HAND 
soldering, I am wondering if an electric skillet would get hot enough 
and reflow it ? I could quite easily go buy one and hack the sides off 
to make a flat plate, if it could also go down to 90C I could use it as 
a heat pad for warming PCB's ready for hot air re work (a re work 
station I was looking at had pads to heat the PCB up so the hot air or 
IR worked quicker)

Regards,

Kat.


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