Circuits Assembly - December 2007 - (Page 3)

Glowing Dross Residues, p. 36 DECEMBER 2007 circuitsassembly.com Seeing Is Believing The principles of x-ray inspection DECEMBER 2007 – Vol. 18 No. 12 SAC and Non-SAC Pb-Free Solders, Compared FIRST PERSON 4 Caveat Lector The world's waste shop. Mike Buetow Packaging and SMT Assembly Converge FEATURES COB for SMT ON THE COVER: Understanding 2-D x-ray inspection. 16 Talking Heads Balver Zinn’s Josef Jost Mike Buetow 22 Metalization Options for COB Assembly How they produce different metallurgical interactions with the various die pad and substrate metalizations, the resulting intermetallic structures and growth, and how they impact reliability and cost. By Mukul Luthra MONEY MATTERS 18 Global Sourcing Verifying material integrity. Mike Buetow Solder Materials 24 A Test Comparison of SAC and Non-SAC Pb-Free Solders SAC 305 is the de facto Pb-free solder, but many industry tests have failed to take non-SAC alloys into consideration, nor have tests been performed for any other soldering process (such as wave or selective soldering). By Howard P. Stevens TECH TALK 20 Screen Printing A defective theory. Dr. Rita Mohanty Cover Story 28 An A-to-Z Guide to X-Ray Inspection X-ray inspection is a way to inspect solder joints and locations in a nondestructive manner with products that cannot be inspected optically, such as BGAs and CSPs. It can also be used to investigate the wire attachment quality within semiconductor device packages and certain SMT components. More recently, x-ray techniques have been used for production quality and process control. By Dr. David Bernard 21 Better Manufacturing Occam? Not quite yet. Phil Zarrow SEAs 2007 34 Tech Tips Forming package-on-package PCBs. American Competitiveness Institute 32 BEST: A ‘Funky Chicken’ with an EMS Niche How the 2007 SEA winner for rework and repair uses the customer service survey feedback to identify trends in areas that may need improvement and determine areas of strength. By Chelsey Drysdale 36 Wave Soldering Black powdery oxides. Ursula Marquez de Tino This month at PCDandF.com Supply Chain 37 Process Doctor Brushed off. Terry Munson An OEM Guideline for Selecting PCB Suppliers When choosing a PCB supplier, site inspection and qualification testing are important, but doing your homework ahead of the facility visit can save time and money. Renee Michalkiewicz 38 Pb-Free Lessons Learned MCSBs in SAC 305 vs. SnPb. Chrys Shea DfM The Critical Parameters in the DfM Equation A successful DfM program is part methodology, part design environment and part toolset, with a foundation based on fabrication processes. Nolan Johnson 40 Getting Lean Business improvement systems. Robert Hemmant 42 Eastern Approaches SMT traceabilities, part 2. Cai San Qiang DEPARTMENTS 6 Industry News 12 Market Watch 45 Product Spotlight 46 Ad Index 47 Assembly Insider 48 Technical Abstracts Photo courtesy Dage Precision Industries http://circuitsassembly.com http://PCDandF.com

Table of Contents Feed for the Digital Edition of Circuits Assembly - December 2007

Circuits Assembly - December 2007 Contents Caveat Lector Industry News Market Watch Talking Heads Global Sourcing Screen Printing Better Manufacturing Metalization Options for COB Assembly A Test Comparison of SAC and Non-SAC Pb-Free Solders An A-to-Z Guide to X-Ray Inspection BEST: A ‘Funky Chicken’ with an EMS Niche Tech Tips Wave Soldering Process Doctor Pb-Free Lessons Learned Getting Lean Eastern Approaches Product Spotlight Ad Index Assembly Insider Technical Abstracts

Circuits Assembly - December 2007

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