John Othere suggestion. 1)It is suggest to change another vendor's material for experiment and comparison. 2)kick out vendor from AVL if there is no any solution and improvement on it. Regards. FP Deng Operations--Manufacturing Engineering DongGuan Celestica Electronics Ltd. Tel:0769-83394581 Ext.260 C/P:13686119846 Email:[log in to unmask] ----- Forwarded by FP Deng/DG/Asia/Celestica on 2007-09-18 15:34 ----- FP Deng/DG/Asia/Celestica 2007-09-18 14:00 To "John Ling (Jiazhao Ling)" <[log in to unmask]>, [log in to unmask] cc Subject Re: [TGA] Chip LED Reflow condition Hi, John I think it belongs to material issues. Actually,there are many unpredictable issues on any new process study, So component spec.study for stencil, toolings and process flow & settings become most important. According to what you said that it seems the component is not able to sustain high temperature. even though it was under 230~250 degree. It is just my opinions for yr reference. Regards. FP Deng Operations--Manufacturing Engineering DongGuang Celestica Electronics Ltd. Tel:0769-83394581 Ext.260 C/P:13686119846 Email:[log in to unmask] "John Ling (Jiazhao Ling)" <[log in to unmask]> Sent by: TGAsia <[log in to unmask]> 2007-09-18 12:07 Please respond to "John Ling (Jiazhao Ling)" <[log in to unmask]> To [log in to unmask] cc Subject [TGA] Chip LED Reflow condition Hello, Haley: The bonding wire broken near bonding point. Befroe introducing RoHS, we don't have problemon chip LED reflow. TRhe failed LED can light, when mnual solder it agian. We still have PTH LED with 2% reject rate on wave sodlering which we don't have this problem before. Our supplier have no idea to improve it? Thanks! John Ling Loud China ----- Original Message ----- From: Haley Deng To: [log in to unmask] Sent: Tuesday, September 18, 2007 11:29 AM Subject: Re: [TGA] Chip LED Reflow condition Dear John, What about failure model, ATE test or crack? Haley From: John Ling (Jiazhao Ling) [mailto:[log in to unmask]] Sent: Tuesday, September 18, 2007 11:19 AM To: Asia Committe Task Group Forum; Haley Deng Subject: Chip LED Reflow condition Hello, Haley: Our Chip LED has 10% failure after RoHS reflow. DO you Have any idea to control it? Thanks! John Ling Loud China Confidential Information:This message is sent to the intended recipient and may contain privileged or confidential information. If you received this transmission in error, please notify the sender with a replying e-mail and delete the message and any attachment.Transmission Caveat and Virus Alert: Internet communications cannot be guaranteed to be timely, secure, error or virus-free. The sender does not accept liability for any errors or omissions.For additional information, please visit our website at www.liteon.com