Handbook of Printed Circuit Manufacturing
Of all the components that go into electronic equipment, the printed circuit probably requires more manufacturing operations-each of which must be per formed by a skilled person-than any other. As a shift supervisor early in my printed circuit career, I
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HANDBOOK OF PRINTED CIRCUIT MANUFACTURING Raymond H. Clark
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VAN NOSTRAND REINHOLD COMPANY
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Copyright © 1985 by Van Nostrand Reinhold Company Inc. Softcover reprint of the hardcover 1st edition 1985 Library of Congress Catalog Card Number: 84-131 17 ISBN-I3: 978-94-011-7014-7 All rights reserved. No part of this work covered by the copyright hereon may be reproduced or used in any form or by any means-graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage and retrieval systems- without written permission of the publisher.
Published by Van Nostrand Reinhold Company Inc. 115 Fifth Avenue New York, New York 10003 Van Nostrand Reinhold c;ompany Limited Molly Millars Lane Wokingham, Berkshire ROll 2PY, England Van Nostrand Reinhold 480 La Trobe Street Melbourne, Victoria 3000, Australia Macmillan of Canada Division of Canada Publishing Corporation 164 Commander Boulevard Agincourt, Ontario MIS 3C7, Canada IS
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Library of Congress Cataloging in PubUQtion Data Clark, Raymond H. Handbook of printed circuit manufacturing. Includes index. I. Printed circuits-Design and construction. I. Title. 621.381'74 84-13117 TK7868.P7C55 1985 ISBN-13: 978-94-011-7014-7 e-ISBN-13: 978-94-011-7012-3 001: 10.1007/978-94-011-7012-3
To all people who make their living working in the printed circuit industry.
Preface
Of all the components that go into electronic equipment, the printed circuit probably requires more manufacturing operations-each of which must be performed by a skilled person-than any other. As a shift supervisor early in my printed circuit career, I had to hire and train personnel for all job functions. The amount of responsibility delegated to my subordinates depended strictly on how well I had been able to train them. Training people can be a trying experience and is always a time-consuming one. It behooved me to help my workers obtain the highest degree of job understanding and skill that they and I were capable of. One hindrance to effective teaching is poor continuity of thought, for example, having to say to a trainee, "Wait a minute; forget what I just told you. We have to go back and do something else first." It was in trying to avoid pitfalls such as this that I undertook a detailed examination of the processes involved, what I thought each trainee had to know, and what questions they would most frequently ask. From this analysis I developed the various process procedures. Only after I had done so was I able to train effectively and with the confidence that I was doing the best possible job. Answers had to be at hand for all of their questions and in whatever detail they needed to know. The desire to train effectively, to help the trainee master the necessary skills, and to provide a ready reference for use as needed helped prompt the writing of the Handbook of Printed Circuit Manufacturing. All of the many processes in printed circuit manufacturing are fairly to extremely complicated. Some of them, su
