Conformity Magazine - April 2008 - (Page 21)

ESD Open Forum Test Procedure Excessive tip voltage is an indication of equipment current leakage. 1. 2. Connect the copper wire from the test electrode to a known ground within reach of the unit being tested; After confirming that the tip resistance is less than 2 ohms (as outlined above), plug the equipment into a qualified GFI unit and turn-on the power; Allow the equipment to reach operating temperature; Assuming that the tip is still clean from the resistance test above, bring the tip of the soldering equipment in contact with the tinned end of the test electrode; The soldering equipment should not trip the GFI unit. References 1. ANSI/ESD STM13.1-2000 Standard Test Method for Measuring Electrical Potential from Electrical Soldering/ Desoldering Hand Tools, by Harry Joliff, Melissa Jollif, Ben Baumgartner, Julius Brodbeck, Larry Burich, Cheryl Checketts, Mike Fowler, Charles Gerdel, Vaughn Gross, Jim Mann. About the Author Tim Prass is ESD Subject Matter Expert for Raytheon Technical Services Company LLC, Co-Chair of the Raytheon Corporate ESD Council, Certified Professional ESD Program Manager, ASQ Certified Six Sigma Black Belt, Working Group Chair of the ANSI/ESD STM 13.1 Standard Test Method for Hand Tools, and a member of the ESDA Standards Committee. He can be reached at 317-306-4279. About the ESD Association Founded in 1982, the ESD Association is a not for profit, professional organization directed by volunteers dedicated to furthering the technology and understanding of electrostatic discharge. The Association sponsors educational programs, develops ESD Standards, holds an annual technical symposium, and fosters the exchange of technical information among its members and others. Additional information may be obtained by contacting the ESD Association, 7900 Turin Rd., Bldg. 3 Rome, NY 13440-2069 USA, Phone 315-339-6937, Fax 315-339-6793. Email info@esda.org. Website: www.esda.org. 3. 4. 5. Providing equipment power through a GFI will result in a real time monitoring of fault current to less than the trip point of the GFI (less than 10mA) regardless of the number of leakage paths. This will be the case as long as the tip resistance to ground is periodically checked and is less than 2 ohms. Periodic performance of the above steps will assure a current leakage level below that which will damage ESD sensitive circuits. Use of a GFI will also reduce the possibility of personal hazard due to an electrode fault. Working Group 13 Hand Tools was reactivated in 2007 to begin the review process of ANSI/ESD STM13.1-2000. A new revision to this document should be released during the later half of 2008 or early 2009. Once ANSI/ESD STM13.1 is re-released, Working Group 13 is planning to review the potential industry need for other standards in the Hand Tools arena. Working Group 13 welcomes guests and new members to their committee meetings in February, June, and September. Visit the ESD Association web site at www.esda.org for meeting dates and locations. April 2008 Conformity 21 http://www.esda.org http://www.esda.org

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Conformity Magazine - April 2008 NewsBreaks Editor’s Note Mandatory Analog Cellular Service Ends FCC Releases Quarterly Reports on Consumer Inquiries and Complaints New Standards List Released for The EU’s Low Voltage Directive FDA Issues Notification on Unretrieved Device Fragments FDA Offers Guidance on Waivers for In-Vitro Diagnostic Devices ESD Open Forum Emerging Issues in Standards Challenges in Testing Design Fundamentals Focus on... New Products Product Reviews Premarket Approval Application Guidance Issued by FDA New Jersey Enacts Electronic Waste Recycling Regulations A New U.S. Standard for Workstation and Computer Design Might the CPSC Hold Retailers Accountable for Safe Products? CPSC Loses “Sole Toy Tester” CPSC Actions in the News IEC Standards Update UL Standards Update Telcordia Standards Update From Our “You Can’t Make This Stuff Up” Department Looking Back: Items from Past Issues of Conformity Advertisers

Conformity Magazine - April 2008

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