Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Reflow

Veronica Morales

#24738

Reflow | 9 June, 2003

Hello,

I'm new on this SMT area and I'm getting involved on the oven profilling, I just heard about the term Delta T, can any one explain what is this? We use convection ovens.

Thanks in advance.

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#24739

Reflow | 9 June, 2003

Welcome. You have selected a fascinating area to work.

"What is delta temperature? Depends on what someone is talking about. Here's some possibilities: * In process equipment definition, the difference in temperature from one side of conveyor to the other. * In reflow temperature recipe development, the change in temperature between the preheat and soldering. * In soldering temperature recipe development, the difference in temperature from one side of component to the other.

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#24802

Reflow | 12 June, 2003

I believe the Delta T you're referring to is the delta between the highest and lowest thermal mass components on the given assembly when being processed through reflow.

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