On some 900 MHz equipment I've seen, they use tuning stubs that
toward the end of the stub are broken by lots of thin lines running
across the width of the stub.
On test just run your soldering iron (to bridge the lines) as far as
necessary,

You could do the same on your cap,
not much good on a 100000 piece run, but for a preproduction run ?


Peter Schultz wrote:
>
> Hi,
> I guess that and that what I will do. Give the manufacturer a special PCB
>  which contains about hundred different cap size)
> let them manufacture from that PCB material what they will use for the
> production run, measure which one has the correct
> value and modify the layout according to that one. The trimmer very
> expensive, the 0.1 pF step caps because they are considered as 1% ones
> almost the same price in 1206 size. You can figure out if I can save around
> 40 cents on a 100000 piece run it will well worth to try it.
> Cheers,
> PeterS

--
Peter Cousens
email: cousens@her.forthnet.gr  phone: + 3081 380534
snailmail:  Folia, Agia Fotini, Karteros, Heraklion  Crete, Greece.

Is it true? that they have, on the new version of windows
managed to increase the MTBF from 95 to 98 minutes
(Thats why they called it 95)