Homebrew PCBs

From: "Matthew Smith" <matt@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, June 05, 2008 12:08 AM
Subject: [Homebrew_PCBs] "How to succeed the first time with ultra-small QFN 
packages"


> Hi Folks
>
> I know that under-chip pads were mentioned recently, so I thought that I
> would pass on this link from the TimeNuts mailing list:
>
> Article:
> "How to succeed the first time with ultra-small QFN packages"
> <http://www.wirelessnetdesignline.com/showArticle.jhtml?articleID=202800018>
>
> Whilst the article describes the use of a solder stencil, I am sure that
> this technique could be reproduced manually, given good magnification
> and a steady hand.
>
> Then all ready for the toaster oven or hotplate!

For prototypes I just use a large via and feed solder in manually with the 
tip of the soldering iron.

Leon
--
Leon Heller
Amateur radio call-sign  G1HSM
Yaesu FT-817ND transceiver
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller