IPC-SMTAi 2014 IPC Meeting Minutes Rosemont, IL · IPC Meeting Minutes IPC-SMTAi 2014 Rosemont, IL...

IPC Meeting Minutes IPC-SMTAi 2014

Rosemont, IL

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Report of the IPC-2221/2222 Task Group (D-31b) Gary Ferrari, FTG Circuits is chair of this task group. Cliff Maddox, Boeing Company is vice-chair of this task group. Minutes completed by Cliff Maddox, Boeing Company and John Perry, IPC Attendees

Auer, Lance A. Raytheon Missile Systems

Baccam, Jimmy Lockheed Martin Missiles & Fire Control

Bogert, Gerald Leslie Bechtel Plant Machinery, Inc.

Bowles, Scott A. L-3 Fuzing and Ordnance Systems

Case, Byron L-3 Communications

Collier, Michael A. Teledyne Printed Circuit Technologies

Daniluk, Kelly M. NASA Goddard Space Flight Center

Devaney, Caitlin A. Boeing Company

Dovolos, John Holaday Circuits Inc.

Dupriest, Don Lockheed Martin Missiles & Fire Control

Ferrari, Gary M. FTG Circuits

Fullwood, Lionel WKK Distribution Ltd.

Gandhi, Mahendra S. Northrop Grumman Aerospace Systems

Hwang, David Boeing Research & Development

Jennings, Michael Interdyne Systems

Jouppi, Michael Lockheed Martin

Lawrence, Brigitte Brigitflex Inc.

Maddox, Clifford R. Boeing Company

Mahanna, Chris Robisan Laboratory Inc.

Miller, Michael P. NSWC Crane

Olson, Christopher G. Rockwell Collins

Ortloff, William A. Raytheon Company

Pierce, Stephen SGP Ventures, Inc.

Reed, Randy R. Viasystems Group, Inc.

Rios, Jose A. i3 Electronics

Stevens, Brian Rockwell Collins

Toone, Bradley E. L-3 Communications

Vetter, Steve J. NSWC Crane Project Background and Status This task group is responsible for the development and maintenance of IPC-2221, “Generic Standard on Printed Board Design,” and IPC-2222, “Sectional Design Standard for Rigid Organic Printed Boards.” IPC-2221 Revision B was published in November 2012. IPC-2222 Revision A was published in December 2010. The task group is now addressing the IPC-2226, “Sectional Design Standard for HDI Printed Boards” from 2003. Summarized Results 1) The group discussed Table 6-1, Electrical Conductor Spacing, in the IPC-2221B. It was noted during the APEX-

Expo 2014 meeting that quite often with today’s technologies, fine pitch devices require closely spaced lands that violate the 0.005 in. minimum spacings in Columns A5/A6/A7. Fullwood indicated that a number of boards shops and OEMS within China, Hong Kong and South Korea knowingly violate the 0.005 in minimum electrical clearance in IPC-2221B down to 0.003 in for these categories. Fullwood attempted to obtain technical

IPC Meeting Minutes IPC-SMTAi 2014

Rosemont, IL

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data from these companies in support of the 0.003 in minimums, but was turned down. Accordingly, as a “last-ditch effort”, IPC will generate a SurveyMonkey to the industry requesting data that justifies the tightening of the spacing requirements. If nothing is submitted, we will record that we made this last attempt, and move on.

2) Fullwood reports that he and Hamill have completed their action to review the HDI guide IPC/JPCA-2315, and

the IPC-2226 design standard. Following this review, the pair made a recommendation that IPC should cancel IPC-2315, and revise IPC-2226 to reflect the many changes in industry relative to HDI fabrication. Fullwood also recommended that these documents contain so much detailed design information that it would be impractical to simply incorporate them within the generic IPC-2221.

Fullwood volunteered to lead a subgroup to draft a new version of IPC-2226, and suggested that he was willing to attempt to expedite such an effort with a promise to deliver a completed Working Draft by IPC APEX-Expo 2015. He suggested that this could be accomplished through a series of video conferences with one further face-to-face meeting before February 2015. Despite some mixture of skepticism within the task group to this schedule, Jennings, ESI’s Director of Marketing, volunteered to support this update, and offered ESI’s facilities in Portland Oregon as the meeting site in the early February 2015 time frame.

The following is a list of committee members who have volunteered to work on the IPC-2226 update: John Bauer, Rockwell Collin Lance Auer, Raytheon Vicka Hamill, Honeywell Gary Ferrari, FTG Corporation Randy Reed, ViaSystems Mahendra Gandhi, Northrop Grumman James Baccan, LMMFC Cliff Maddox, Boeing (HB) Caitlin Devaney, Boeing (HB)

3) The group reviewed a submission from Bowles wherein he collected all the tables that provide producibility levels

within IPC-2221B and IPC-2222A. Bowles original intent was to do this on behalf of the IPC-2223D revision, and to see where that flexible and rigid-flex design standard needed to incorporate related producibility levels. This work, however, is very much related to the D-31b effort to see if any such tables within IPC-2222 should be transferred to the generic IPC-2221.

The group began this review process, and made the following determinations:

Fabrication allowance in Table 9-1 and supporting text 2221 should stay in 2221 Profile cut outs and notches 2222 table 5-2 and supporting should move to 2221

These decisions may seem divergent when in fact they represent cases where some tables should be carried across multiple IPC-222X standards due to changes in the producibility levels for that given technology (rigid, flex, HDI) while other tables should be consolidated into a single table within the generic IPC-2221 because their producibility levels remain unchanged across the sectional designs standards. This review effort was halted towards the close of the meeting, where it was decided to let the remainder of the tables in Bowles submission be reviewed by the D-11 IPC-2223 subcommittee first. This effort will be picked up by D-31b at a later date.

Action Items 1) Perry to generate a SurveyMonkey to request OEM data submissions that would be sanitized for anonymity

that the task group could in turn review and determine if modifications should be made to the minimum spacing requirements in IPC-2221C Table 6-1.

2) Fullwood to establish a series of web conferences in the October 2014 – January 2015 time frame to work on

a Working Draft to IPC-2226A, and to work with Jennings on a face-to-face meeting at ESI in Portland, Oregon in February 2015 ahead of IPC APEX-Expo 2015.

3) Perry to schedule a full day meeting at IPC APEX-Expo 2015 for D-31b that will be devoted entirely to the

review of the IPC-2226A Working Draft.