The Susquehanna Region Chapter
 of the IPC Designers Council

Announces a Meeting to Discuss

Controlled Impedance of PWBs


Date:   Tuesday  December 15, 1998  (Note change in day from our normal Wed
meetings.)
Time:           6:30 - 8:30 pm

Place:  Vestal Public Library

                Vestal Parkway (Rt 434)  Vestal, NY

                (Just west of the intersection of Rt 434 and Rt 26, on the
south side of Rt 434.)


Refreshments:   Drink and a snack will be provided
                        $1 members, $2 non-members; to cover cost of
                  refreshments


                Steve Zimmer, Hadco Corp. employee and a SRC Member,
                will present a discussion on Controlled Impedance.

Why is impedance control important, it was never even considered a few years
ago?
How do variables of  materials, coupon design, and solder masks impact pwb
impedance?
How can these variables be controlled?
What impedance tolerance can be achieved considering these variables?
Should impedance be controlled by design artwork or by the pwb supplier?
The discussion will also cover differential impedance.

This should be a great meeting since it is conducted by one of our own
members, who knows what level of technical detail we hope for.  Come and
participate in the discussion.



To get an idea of attendance, please RSVP

                Rick Adams, Lockheed Martin Control Systems,  (607) 770-2467
                                Or
                Scott Hust, Lockheed Martin Control Systems,  (607) 770-2146




The Susquehanna Region Chapter of the IPC Designers Council is dedicated
to providing educational opportunities for PWB Designers.

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