FreeLists / pcdlist / [pcdlist] Re: Thru hole components

[Rob Mongey <rmongey@xxxxxxxxxx>]

Hi all,
         I too leave press fit and tooling/Alignment holes out of any 
rounding I do. (These are normally NPTH anyway). I do my rounding to the 
nearest 0.05 (4 thou), almost always rounding up.

This means if I have:

0.63mm
0.78mm
0.81mm
0.88mm
0.90mm
1.12mm
1.15mm

It Becomes:

0.65mm
0.80mm
0.90mm
1.15mm

Your board shop probably does this, wether they tell you or not.

BTW, who the hell is using through hole resistors and the imperial 
measurement system? :)




At 11:12 09/05/02 -0700, you wrote:



>Hello,
>
>I round off all drill sizes except press fit or alignment holes to the =
>nearest 5mil.
>Only a pressfit or alignment hole will cause me to have a drill size =
>that does not end with 5 or 0 mil.
>I am not sure how this will work when we go metric.

                                                      Regards,
                                                           Rob Mongey.
                                                           PCB Designer.

        Robert Mongey <rmongey@xxxxxxxxxx>      Tel    : +353 (0)91 774300
        Bio Medical Research                    Direct : +353 (0)91 774338
        BMR House,                              Fax    : +353 (0)91 774302
        Parkmore Business Park West,            Mobile : +353 (0)87 2485262
        Galway
        Rep of Ireland.


-- No attachments (even text) are allowed --
-- Type: text/plain


To unsubscribe from the pcdlist, send an e-mail to 
pcdlist-request@xxxxxxxxxxxxx with "unsubscribe" in the subject field.

If you have any questions or problems, contact tgentry@xxxxxxxxxxxxxxxxxx