[hpsdr] SMT Soldering and Circuit Board Heat Question

[Cecil Bayona]

The main problem with hot plates is the uneveness of the temperature on the 
board because of not making consistent contact with the plate.

What if you are making a double sided board? Any components on the plate side 
are going to get all the heat while the board doesn't touch the plate at all.

The use of an oven or heated air from a enbossing gun will go further at 
making sure that the board has even heat.

I have tried both methods and both work quite well in terms of not overheating 
the board in some places.

I have a little tutorial at this link as well as a link to Olsen's air method.

< http://www.hpsdr.com/Public/Projects/SMT/SMT.html >


On Sunday 30 July 2006 12:26, Christopher T. Day wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Cash,
>
> Have you looked into laboratory hot plates at all? Googling around, I
> see that Corning makes a wide line of them. The temperature controlled
> ones look ideal but too expensive, at least new. There seem to be quite
> a few of the unregulated kinds going surplus on eBay and various lab
> surplus sites. They range from 5"x5" and up. Most are described as being
> particularly even heat. Do you think any of these might be worth a look?
> Thanks.
>
>
> 	Chris - AE6VK
>
> P.S. - just ordered the solder paste and beverage warmer from you; I
> already have a heat gun.
>
>
> -----Original Message-----
> From: S. Cash Olsen [mailto:KD5SSJ at zianet.com]
> Sent: Sunday, July 30, 2006 8:36 AM
> To: hpsdr at hpsdr.org
> Subject: Re: [hpsdr] SMT Soldering and Circuit Board Heat Question
>
> ***** High Performance Software Defined Radio Discussion List *****
>
>
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-- 

Cecil
KD5NWA
www.qrpradio.com www.hpsdr.com

"Life is short and I'm too busy tipping Sacred Cows." Don Seglio Batuna

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