Think about the way a reflow oven works, you have these recirculating zones sitting right next to each other with an open tunnel and a conveyor moving, and ultimately boards moving between them.Īll ovens are designed to give you as much separation as possible. In any given oven, there is a limit to how much difference in temperature you can set two adjacent zones. is talking about is what we used to call thermal spill. I have been an oven designer for 30 years. How do I find the best way to prevent the oven from having competing zones while also getting an accurate process? The issue we have is that some of the zones in the oven are competing with each other to get to the correct temperature. However, the part number of our pastes doesn’t match any of the options. There is a fairly large list of paste options within the oven profiler software. We have been having some issues with our tin-lead process.

He says we have an eight-zone reflow oven in our SMT production line. What is bothering him is his reflow profiling situation. We’re here to help you with your process, equipment, methodology, material, questions and whatever else may be bothering you. He is a pioneer in the science of reflow.Īnd welcome to Board Talk with Jim Hall and Phil Zarrow of ITM Consulting, on this forum as The Assembly Brothers. He has vast experience in SMT equipment, materials and processes.Ī Lean Six-Sigma Master Blackbelt, Jim has a wealth of knowledge in soldering, thermal technology, equipment and process basics. With over 35 years experience in PCB assembly, Phil is one of the leading experts in SMT process failure analysis. Process Troubleshooting, Failure Analysis, Process Audits, Process Set-upĬEM Selection/Qualification, SMT Training/Seminars, Legal Disputes How do I prevent the oven from having competing zones? Jim Hall and Phil Zarrow, The Assembly Brothers, answer this question.īoard Talk Board Talk is presented by Phil Zarrow and Jim Hall of ITM Consulting. Some of the zones or our oven profiler are competing to get to the correct temperature. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video.

Reflow oven temperature