Tuesday, March 23, 2010

Learn about Halogen-free and the New RoHS

Are halogens currently banned elements in electronics? What will RoHS II look like? Can I achieve the same performance with lead-free materials as I used to with leaded assembly products? These and other questions are answered in SMT’s free Webcast, Lead-Free/RoHS Materials for Printed Circuit Board Manufacturing, available on demand on SMT’s homepage, smtonline.com. Edson Ito, Vectra LCP technical marketing manager, Ticona Engineering Polymers; Rob Rowland, supplier engineering manager, RadiSys; and Jeff Bowin, technical service manager, Henkel Electronics Materials present.

Ito focuses on the Vectra liquid crystal polymer (LCP) and its application to lead-free assembly. This halogen-free material offers coefficient of thermal expansion (CTE) stability (tight dimensional tolerances) and robustness advantages in the higher-temperature reflow environment of lead-free assembly.

Rowland then summarizes some of the major changes anticipated in the new version of the EU RoHS Directive, currently dubbed within the SMT industry as RoHS II. His presentation, based on his column in the January/February issue of SMT, EU's RoHS 2 on the Horizon, covers terminology changes, exemption expirations, and the complex layout of a single all-inclusive document that replaces the original RoHS Directive and subsequent Decisions

Bowin’s presentation concentrates on sustainability and specifying the right halogen-free solder paste now, meeting current standards and performance requirements, before legislation pushes you into halogen bans unprepared. Halogens are deliberately added to solder pastes and fluxes as activators, in addition to already existing halides and halogens that may be present. Henkel’s solder R&D focuses on creating a paste that prints and solders well (low voiding, good moisture resistance, etc.) with no deliberately added halogens. Reliability, reflow, and slump tests show that the balance of sustainability and performance characteristics can be achieved.

Register now for this free, on-demand Webcast at http://www.electroiq.com/index/webcasts/webcast-display/8371357768/webcasts/smt/live-events/lead-free_rohs-materials.html

Meredith Courtemanche, executive editor

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