AVR-Chat

If you can deal with a small board (>2" square), Seeed or Itead are really
tough to beat. $10 + $3 shipping for 10 boards-- including double sided
silkscreens and solder masks. You can go to a 4x4" board for $25 + $4
shipping from either company as well. I have ordered from both, and I can
tell you their shipping is slow, but otherwise the service is great. I
ordered my last board from Itead and it shipped within 5 days, but it took
18 days to arrive from China.

Both Seeed and Itead offer higher speed shipping, but for some reason
Iteadstudio charges about $10 less for DHL ($25 vs $35), at least for the
5x5cm (2") boards. Seeed also seems a bit slower to first ship the board, so
in spite of the nicer website, my current preference is Itead, but both
should be fine.

On Thu, May 26, 2011 at 9:36 PM, Zack Widup <w9sz.zack@gmail.com> wrote:

> I have never made two-layer boards but I have made many double-sided
> boards myself. I'm not set up to mass-produce boards but I can usually
> make 3 or 4 at a time with no problem.
>
> I made some boards for 47 and 78 GHz (millimeter-wave) ham radio
> projects. The tiny circuits are etched on 5-mil thick Duroid
> teflon-fiberglass board. I used some HSCH9251 "flip-chip" diodes.
> These have packages about 10 mils square, and with leads the devices
> are about 28 mils long. The leads are a few mils wide. They look like
> fly specks. You can't solder them; there are two common ways of
> mounting them - wirebonding and with conductive silver-epoxy such as
> Epotek H20e. I use the silver epoxy.
>
> Zack
>
> On 5/13/11, Hakon Gudmundsson <h_instruments@yahoo.com> wrote:
> > If you need a PCB board of your design try H-Instruments:
> >
> > Get 5 pcs of your PCB boards. 5 indentical boards.
> > 2 layers. Any size less than 100x100mm only 59.95$ with shipping
> > Any size less than 50x50mm only 29.95 $ with free shipping
> >
> > See: http://www.h-instruments.com or
> http://www.h-instruments.ecrater.com
> >
> > We accept Gerber files in RS-274X Format.
> > Gerber files should contain following layers:
> > - Gerber Board Outline
> > - Gerber Bottom Layer
> > - Gerber Top Layer
> > - Gerber Bottom Solder Resist
> > - Gerber Top Solder Resist
> > - Gerber Bottom Overlay
> > - Gerber Top Overlay
> > - Gerber Bottom Paste
> > - Gerber Top Paste
> > Spec:
> > Files Types: Gerber 274-X, 274 and Aperture file
> >
> > Material: FR - 4
> >
> > Layer Count: 2
> >
> > Maximum Panel Size: 100mm x 100mm
> >
> > Board Size Tolerance: +/- 0.2mm
> >
> > Board Thickness: 1.6 mm
> >
> > Board Thickless Tolerance: +/- 10%
> >
> > Minimum Line Width and Spacing: 0.1524mm
> >
> > Minimum Hole Diameter: 0.3mm
> >
> > Standard Lead Time: 5 - 7 business days
> >
> >
> > Free airmail shipping with tracking no. includet
> > We send to USA, Canada and most countries in Europe.
> >
> >
> >
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>


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