Circuits Assembly - October 2008 - (Page 47)

Special Advertising Section Assembly Insider soluble flux types, and others. Qualitek International Inc., qualitek. com Instant Online Quotes, Day or Night SPECIAL LIMITED-TIME PROMOTION Delivered, all testing and shipping included: Single/Double-Sided $79.99 1st piece $29.99 up to 5th piece allow 7 working days Real-Time Thermal Profile Updating Explorer thermal profiler comes in radio frequency version that beams profile data in real-time to the computer, as the profiler runs through the reflow oven or wave solder machine. Instantly shows what is going on with the process. There is said to be less potential stress to the profiler or production board; any over-temp situation is instantly revealed. Alerts operator to such pitfalls as forgetting to turn on prior to a run; when a TC pops off; wrong oven recipe, and when profiler gets stuck in the oven tunnel. KIC, kicthermal.com Even One Piece, We Care!! 4-Layer $129.99 1st piece $79.99 up to 5th piece allow 8 working days 6-Layer $149.99 1st piece $99.99 up to 5th piece allow 9 working days Based on standard speciﬁcations. See the HOME page and Calculate for other options. Register to receive other special promotions. www.jetpcb.com/eng VISIT For anWWW.JETPCB.COM/ENG instant PCB Quote visit FOR OTHER PROMOTIONAL www.pcbjet.com/eng LOW-COST PCB PROTOTYPES Sn-Based Solder SN100e Pb-free solder is manufactured from tin, copper and cobalt. Is RoHScompliant and reportedly reduces copper dissolution. Is said to provide brighter, shinier solder joints compared to SAC alloys. Is compatible with all SAC and SnCu alloys. Performs with ENIG, immersion tin, immersion silver, OSP, and HAL board finishes. Meets requirements of J-STD-006. Qualitek International, qualitek.com Continued from pg. 34 Flex Handler for Pickand-Place The FLX2011-MKL placement machine now comes with a twin vacuum table said to ease flex board and film substrate handling; reportedly doubles productivity. Is twice the size of the former table, with ends that protrude from both sides of the placement machine. Features a pneumatic servo drive said to move easily and without vibration. Has a working area of 31.5” x 23.6”. Essemtec, essemtec.com After longer production periods, one is able to decide whether the decision was correct. It is, therefore, a good choice to have an oven that can switch easily from air to nitrogen. Reflow ovens are set up to achieve <100 ppm throughout the tunnel. The more nitrogen used, the higher the system lifecycle cost. To reduce nitrogen consumption, ppm levels should be optimized and nitrogen applied only in critical zones of the reflow oven: end of soak zone, peak zones and first cooling zones where the assemblies are sensitive to oxidation. The optimal ppm levels depend on the application. An internal study1 suggested ppm level up to 2500 ppm. n References 1. U. Marquez, D. Barbini and W. Enroth, “Impact of Soldering Atmosphere on Solder Joint Formation,” SMTA Pan Pacific Symposium, January 2008. Email: ppm@goppm.com or Call: 603.895.5112 circuitsassembly.com Circuits Assembly OCTOBER 2008 47 http://www.bareboard.com http://www.jetpcb.com/eng http://www.bareboard.com http://www.kicthermal.com http://www.jetpcb.com/eng http://www.qualitek.com http://www.goppm.com http://www.essemtec.com http://www.circuitsassembly.com

Table of Contents Feed for the Digital Edition of Circuits Assembly - October 2008

Circuits Assembly - September 2008 Contents Letters Caveat Lector Industry News Market Watch Talking Heads Global Sourcing Screen Printing Better Manufacturing 'Checking Up' on Medical Electronics Solder Ball Attachment Using Laser Soldering Improving QFN Reliability Reflow Soldering Tech Tips Test and Inspection Process Doctor Pb-Free Lessons Learned Alternative Energies Eastern Advances Product Spotlight Ad Index Assembly Insider Technical Abstracts

Circuits Assembly - October 2008

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