On 11/24/06, Zik Saleeba <zik@zikzak.net> wrote:
> Out of interest Vasile how do you go about prototyping with BGA
> packages? Do you just knock up the whole design and have it
> manufactured as a short run? Or do you have some way of soldering BGAs
> in-house?

Prototyping with large BGA (around 500 balls) is impossible. Mine's
it's a first revision project with all bad things comming from this.
Prototyping with small BGA (54-90balls) is possible. Less than 54
balls is feasable even at home using manually soldering and a good
microscope + heat air solder divice + solder paste.

>
> I'd like to start using BGAs in my designs. Unfortunately short-run
> board manufacture in Australia is ridiculously expensive.

This is expensive everywhere. My boards are manufactured in USA.
Even in China will be expensive if you're planning only a small
numbers of boards (10...100). And shipping/customs time&price will be
large.

greetings,
Vasile

 I might have
> to look off-shore if this is the only option.
>
> Thanks,
> Zik
>
> On 11/24/06, Vasile Surducan <piclist9@gmail.com> wrote:
> > On 11/23/06, Herbert Graf <mailinglist3@farcite.net> wrote:
> > > On Thu, 2006-11-23 at 09:15 -0800, Vasile Surducan wrote:
> > > > Hi,
> > > >
> > > > I have a serious problem in founding a 16 bit wide 3.3V NOR FLASH with
> > > > 64Mbyte capacity (512Mbit) and an overal thickness below 1mm (max 0.8mm).
> > > > I found the Spansion S29GL512, but the total thickness including balls
> > > > could be between 1mm to 1.4mm which is too much for my application.
> > > >
> > > > Any feasable suggestion greately appreciated.
> > >
> > > I'm kinda confused, in the title you say SDRAM, yet in the body you say
> > > NOR FLASH.
> >
> > Sorry, I have both SDRAM and FLASH onboard, the SRAM package thickness is ok.
> > The FLASH BGA package I'm looking for is VFBGA with 0.6mm the body
> > thickness and 0.4mm balls diameter. It's the smallest I found.
> >
> > >
> > > Anyways, does it have to be BGA? Some of the TSSOP packages I've seen
> > > for flash are VERY thin, I've never measured but the packages are surely
> > > less then 1mm thick, and since they sit on the board the package
> > > thickness is all that matters.
> >
> > yes, but the TSSOP are large...:(  I've measured the Spansion TSSOP
> > and are about 1.05mm)
> >
> > >
> > > As for size I'm not sure about that.
> > >
> > > TTYL
> > >
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