IEEE-CPMT Society TC-1 Committee
on Electrical Contacts
Tuesday October 5, 2010
Chair: G. Witter
Vice-Chair: Bob Malucci
Secretary: C. Leung
Holm Conference Attendees
Opening: G. Witter
· TC-1 of IEEE-CPMT meeting was called to order by Chairman G. Witter.
1. Approval of minutes of previous meeting - G. Witter
· 2009 meeting
minute has been posted at www.ewh.ieee.org/soc/cpmt/tc1/
web page. It was approved.
2. Preliminary Report on Joint 25th ICEC & 56th IEEE-Holm Conference – Ed Smith
· Total registration is over 150 with representatives from 16 countries.
Total of 83 technical papers with contributions from
· The 2011 IEEE Holm conference will be in Minneapolis, Minnesota from Sept 11 – 14.
3. Report on Intensive Course on Electrical Contact – G. Witter for P. Slade
· The 2010 intensive course was offered from Thursday to Saturday before the conference. 19 attended and 5 were from overseas. The course went well and generally the comments from the students were very positive.
4. Report on CPMT Transaction –John McBride
· CPMT now considers the Holm conference proceedings as an archived publication and will no longer take papers directly from the conference for second publication in CPMT journal
· George Flowers commented that the academics still like to be on CPMT journals.
· CPMT editors would need to review resubmitted Holm papers with additional work.
5. World Calendar
· Professor Jigao Zhang reported that the 2012 ICEC will be hosted by China in Beijing. Call for paper materials were distributed and will be available in the TC1 website.
IEICE Transaction (
6. Publicity –
· Web and CPMT newsletter will be the primary medium for TC1 and Holm information. Many members have used the web for info and registration to conference.
7. TC1 sub-committee Reports:
Material restrictions and substitution – Dr. Volker Behrens
No substantial changes since 2009. Chapter 12 of the distributed DODUCO Data book has up to date info on restrictions. In DODUCO, the production of Cd free to Cd contacts is about 5:1.
(2009 TC1 meeting minute has the following:
EVL (End of Vehicle Life, Cd use in autos, no change from the past
ROHS consumer products, Cd allowed but subject to technical review again in 2014
REACH decrete, e.g. CdO will have to be registered and evaluated depending on current knowledge of the chemical
WEEE still in effect)
· Henry Czajkowski : Status quote with NEMA taking a proactive approach while some states try to adopt ROHS regulations. NEMA new strategic initiative is to influence legislative to be uniform and not as restrictive. Cd is still exempt under current rules now..
Frequency Connectors – Roland Timsit
1-2GHz now, and extending to 5 GHz designs, some even to 5-10 GHz where skin effect is a problem. Because of the high price of Gold, there is a lot of effort to reduce Au use and causing some problems with Ni under plate. Competition is in conversion of copper to fiber optics. Bob Malucci commented that Ag plating is tested to solve skin effect problems but corrosion maybe a problem.
MEMs and micro-contact technology – Bob Malucci
MEMs and nano structures for connectors reported in this conference. 5 nano related papers in this year but ease of manufacturing maybe the issue. Nano can be thinner and better quality than regular material.
Current Contactors - Henry Czajkowski
More applications in alternative energy switching. Not necessarily new designs but new applications. As market demands grow, then there will be new designs. DC is the big thing as supported by P. Theisen’s Mort Antler lecture.
Trend: Controlled open and close by point of closing to reduce erosion, smaller devices with more electronics. There maybe growth in connector opportunities, especially power connectors to connect modular contactors.
Arc fault detection – John Shea / Xin Zhou
NEC code update: mandated state by state adoption of NEC code in regard to AFCI protection. AF breakers are now required in all new construction since 2008. 2011 changes in progress include: Arc Fault in new homes, retrofit also requires AFCI, allows receptacle type AFCI, allow replace receptacle with AFCI type of receptacles.
MCCB arc flash reduction requirements in 480V, reduce arc flash energy.
NEC is a 3 year cycle review. New integrated AFCI and ground fault; IEC Standards in AFCI for low cost develop markets.
– Werner Johler
Miniaturization has reached limits. Environment is <125C, resistance is < 2 milliohm, isolation is 6kV, working voltage is 240VAC. Applications are in wireless, HVAC, zero standby power, hybrid vehicles.. Estimated that 3.5 billion relays made in China and 125 million made in US.