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Standards Governing Polarity Marks
Is there a standard that governs how polarity marks are used to denote orientation of components on circuit boards?
Phil Zarrow, ITM Consulting With over 35 years experience in PCB assembly, Phil is one of the leading experts in SMT process failure analysis. He has vast experience in SMT equipment, materials and processes.
Jim Hall, ITM Consulting A Lean Six-Sigma Master Blackbelt, Jim has a wealth of knowledge in soldering, thermal technology, equipment and process basics. He is a pioneer in the science of reflow.
I'm currently chairman of the Automated Component Handling Committee of the ECA/EIA, and we publish the EIA-481 standard for carrier tape. This issue of non-standard or no-standard marking for polarity or Pin 1 location has caused nothing but headaches for us.
We've done our best to establish standard rules for component orientation in tape, but our efforts have been hampered by the inconsistent markings by manufacturers and legacy orientation practices dating to the beginnings of SMT. Would one of you, Jim or Phil, be willing to contribute your thoughts on this matter to our committee?
Sunstone Circuits, has released the newest version of their design software, PCB123. Bottom line, the design process just got easier. Sunstone Circuits
Once you have made the decision to package your electronics with rigid flex, it makes sense to pick a production partner who can build it right. Printed Circuits, Inc.
Solve manufacturing challenges while networking with hundreds of exhibitors and thousands of peers focused on design, manufacture, assembly and test. Keynote by William Shatner. IPC — Association Connecting Electronics Industries
There's simply no reason to scrap circuit boards when they have contacts contaminated with solder. Restore them using the Gold Contact Plating Kit. CircuitMedic
Once you have made the decision to package your electronics with rigid flex, it makes sense to pick a production partner who can build it right. Printed Circuits, Inc.
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http://www.pcbmatrix.com/downloads/files/IPC-7351/Component%20Zero%20Orientations%20for%20CAD%20Libraries.pdf
R.R.
We've done our best to establish standard rules for component orientation in tape, but our efforts have been hampered by the inconsistent markings by manufacturers and legacy orientation practices dating to the beginnings of SMT. Would one of you, Jim or Phil, be willing to contribute your thoughts on this matter to our committee?
Scott Carter, Tek Pak, Inc., US