Ken,

OH YES! It would be quite troublesome to not specify how to panel the
boards. Production/Manufacturing should have some say in the number 'up' on
a panel, then the fab guys can put in their 2cents on how well that works on
a physical panel. Productions first choice may be wasteful on a full raw
material panel so it has to be 'worked out'.

Your thoughts on what effects it can cause are right! Defining the panel
size will help production tool up for the board properly as well as maintain
future continuity. Hip Hip for raising these issues.

Ideally, a panel will have a convenient quantity for manufacturing batch
sizes, and yet be optimized from the fab house to waste as little material
as possible.

Good luck!

Richard Hamilton
Clemar Mfg. / Rain Bird
[log in to unmask]

> -----Original Message-----
> From: Ken Patel [SMTP:[log in to unmask]]
> Sent: Friday, March 10, 2000 9:21 AM
> To:   [log in to unmask]
> Subject:      [TN] Single v/s panel info on drawing & gerber
> Importance:   High
>
> Assembly folks / layout guys / Stencil guys,
> We received a fab drawing and gerber for single board but in reality it's
> a
> panel or an array. My design guy says that leave it to fab house on
> selection of panel size. It's a common practice. He thinks that different
> fabs work with different materials and processes.
>
> I do not agree with him for the following reasons. What do you think guys,
> particularly in assembly house!
> (1) Stencil making will be a trouble one as person is going to order based
> on gerber unless someone tell him else he has to order another one.
> (2) What if the job is shifted to different fab vendor. We have to start
> complete process again if panel size is different.
> (3) Machine programming modification,
> (4) New wave fixturing.....and many more
>
> Any valuable inputs will be appreciated.
>
> re,
> ken patel
> ______________________________________________________
> Ken Patel                       Phone:  (408) 490-6804
> 1708 McCarthy Blvd.             Fax:    (408) 490-6859
> Milpitas, CA 95035              Beeper: (888) 769-1808
>
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