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[ts-7000] Re: 3.3V 5V ideas

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Subject: [ts-7000] Re: 3.3V 5V ideas
From: "craignied" <>
Date: Wed, 16 Dec 2009 17:35:34 -0000
Thanks super for the detailed post, David (and for the tip, Mike)
 
> Fairchild and TI have many parts that'll work. I'll often
> use TinyLogic parts from Fairchild as I can scatter the
> bits around where ever I need them (makes layout dead easy),
> and they're tolerant to voltages up to 6V.

Would you be so kind as to give me a couple of part numbers so that I can check 
out the specs?
 
> Soldering SMT devices is really very easy. You use a flux
> pen to wet the area to solder, solder the part down,
> making as big a mess of the job as you like, and then use
> a flux pen to wet solder wick and use that to remove the
> excess solder from the pins. Then spray flux cleaner and
> use a kimwhipe ('chem-whipe' kind of like a tissue but not
> as fragile) to get rid of the excess flux around the area
> you were soldering, and viola, it looks like you made a
> perfect soldering job.

I've hand soldered SMT devices to boards, but you describe a technique that I 
haven't used--"use a flux pen to wet solder wick and use that to remove the 
excess solder from the pins".  That sounds really clever--how exactly to you 
"wet solder wick?"  I've been trying to be so compulsive, this may help my 
sanity ;)

> Even knowing about solder-mount pads, I would generally
> not use them anymore. I find it much simpler to layout
> a simple PCB with headers, and whatever power-sources
> I decide to put on it.
> 
> Check out http://www.barebonespcb.com
> 

Thanks, David.  I use gEDA and have fab houses build the boards, but I've been 
so into the whole breadboard it all up first concept that I hadn't really 
thought how cost effective it would be to hybrid breadboard/circuit fab.  What 
a great idea.

Thanks,
Craig




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