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| From [log in to unmask] Wed Oct 23 14: |
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We are also looking at using FR-2. Does anyone have any information
on process capabilities. i.e. hole tolerances, hole to hole, hole to
edge, trace width, etc.
Thanks:
Steve O'Hara
______________________________ Reply Separator _________________________________
Subject: FR2 Printed Circuit Boards
Author: Non-HP-glackin ([log in to unmask]) at HP-Vancouver,mimegw2
Date: 10/18/96 5:13 AM
Were starting a new product next January, using an FR2 PCB. I would be
grateful for answers to any of the following questions.
(1) What precautions (process procedures) should we use to stop the boards
warping as they go through the reflow oven? I would be interested to
hear from anyone who send FR2 PCBs through a reflow oven.
(2) What is the ideal temperature for storing FR2 PCBs?
We use a selective wave-soldering process for soldering PTH components.
After going through the reflow oven, how long and at what storage
temperature should we keep the FR2 PCBs, before we send the boards
across the wave-soldering machine.
(3) What PCB specifications should we give our PCB suppliers, so that the
FR2 boards can be used effectively as it goes through the process (e.g.
so that the boards don't warp as they go through the reflow oven)?
Thanks,
Frank Glackin.
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