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

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


michele sommaruga

#12658

double reflow | 9 February, 1999

I would like to have information about the processability of different packages. In particular I would like to known for which package I can use a double reflow for soldering.

Best Regards

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ETS - Brian Stumm

#12659

Re: double reflow | 9 February, 1999

By double reflow are you referring to double sided reflow? Or are you referring to reflowing twice?

| I would like to have information about the processability of different packages. | In particular I would like to known for which package I can use a double reflow for soldering. | | Best Regards | | |

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michele sommaruga

#12660

Re: double reflow | 10 February, 1999

I am referring to reflowing twice. Fist time I reflow the up side, turn the PCB and reflow the bottom side.

| By double reflow are you referring to double sided reflow? Or are you referring to reflowing twice? | | | | I would like to have information about the processability of different packages. | | In particular I would like to known for which package I can use a double reflow for soldering. | | | | Best Regards | | | | | | | |

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Dave f

#12661

Re: double reflow | 11 February, 1999

| I would like to have information about the processability of different packages. | In particular I would like to known for which package I can use a double reflow for soldering. | | Best Regards | | | Michele: Double sided reflow is common practice. I expect that 99+% of your SMT components will "stand the heat" of two reflow cycles. The first pass components must be light-weight enough to stay on the board (substrate) during the second course, of course. (Check the archives on this) The real test is in the pudding. Grab a handful of components, test 'em, cook 'em, test 'em, cook 'em ...

I know some "worry warts" that don't want to wave solder second side SMT components, without testing to see if it truely is a problem.

TTYL

Dave F

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