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

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Thermal Mass Differences in PCA

Views: 661


OBM

#52282

Thermal Mass Differences in PCA | 2 November, 2007

Dear all,

Does anyone knows if exists a rule or an standard that restrics the use of extremelly large surface mount devices > 7500 mm3 in combination with very small devices like 0402 in the same assembly ?. I am facing profiling problems due to this extreme mix.

Thanks in advance for your valuable inputs.

reply »

#52289

Thermal Mass Differences in PCA | 3 November, 2007

There is no such standard, nor should there be. BIG boys [and girls] solder products like this. What temperatures are you measuring on the terminations of these components?

reply »

reflow oven profiler

PCB equipment