Hi Jeff-

You are looking to mass produce something with two different sized balls on
the same circuit? That 0.002" difference in diameter will likely cost you a
lot.

Other than that, depending on pitch, your needs are at the smaller end of
the stencil technique for placing solder balls. Maybe someone could be
creative about using two different stencils (if the distance between these
different heights is far enough). Otherwise you most likely would be using
a laser re-balling service. I recently used Retronix (the laser re-baller
is in the UK) and had very acceptable results. There is another laser
re-baller in California I used years ago, PacTech who is still around, and
they were pretty good to work with also. I decided to work with Retronix
because they were stronger in offering complete part recycling services
(unfortunately necessary in today's environment of part scarcity).

Wayne Thayer

On Wed, Feb 2, 2022 at 11:36 AM Steve Gregory <[log in to unmask]> wrote:

> Hi Jeffery,
>
> You might check out these guys (
>
> https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.micross.com%2fcorfin-industries-is-now-micross%2f&c=E,1,UmoToKlwaSSzggkBaETs929Yrqlokc8PjkoRqzI7qcnhEp4o6WxmgKliY8aj9j_DlGXOzacVLp3ERnio8Oda0RsQMnvxEuPpW8tjs4Bbpg,,&typo=1
> ) I dealt with
> them years ago when they were Corfin Industries and they were some of the
> best, looks now that there's a lot more capability there than when I dealt
> with them.
>
> Steve
>
> On Wed, Feb 2, 2022 at 12:07 PM Jenkins, Jeffrey (US) <
> [log in to unmask]> wrote:
>
> > Hi Technet,
> >
> > I'm hoping that someone on here may be able to provide me some guidance
> as
> > to a vendor that can do solder ball install for me.  This isn't a reball
> > effort, but most likely takes similar expertise.
> > My current vendors are not able to handle the quantity and size of the
> > spheres as they're more setup for indiviaual ICs.
> >
> > In short, I have 2 custom designed RF filters on Rogers based material
> > - about .200"x .350" (about the size of your pinky finger nail)
> > - Panelized array (about 18 up, still finalizing)
> > - balls for one filter are 11mils in diameter, the other 13mils.  All
> > tin-lead.
> > - 17 balls per filter.
> > - 17000 filters in total need balls installed
> > - Also depanelize and put in trays that we'll provide.
> >
> > This is more of packaging effort I feel.  I have reached out to a few
> > places with
> >
> https://urldefense.com/v3/__https://isipkg.com__;!!Ooxr18I!RAwausYDiet2tXYHGV76FCF0f4OEJoV0ixMnt8tKhhWPDt7QAr9dCI1lYsAMZM3U6EhJ$
> > being one of them, but I've not heard anything back so I'm looking for
> > other leads.
> >
> > Any help is greatly appreciated.
> >
> > Best,
> >
> > -Jeffrey
> >
> >
> >
> > Jeffrey Jenkins, CID+/CIT
> > Principal Engineering Designer Lead
> > [log in to unmask]
> >
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> Kimco Design and Manufacturing
> Process Engineer
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