Printed Circuit Board Assembly & PCB Design Forum
SMT electronics assembly manufacturing forum.
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Hi ,
Observed component drop during second reflow.
Com...
- Dec 03, 2018
by
Ameen
I can't open your spread sheet to see how you calculate this...
- Dec 03, 2018
by
dwl
Hi,
Thanks for the valuable feedback.
Agree with you.
...
- Dec 04, 2018
by
Ameen
I would guess then that it is either variation in paste volu...
- Dec 04, 2018
by
Robl
Hi Rob,
Thanks.
We have inline SPI. Suspecting small j...
- Dec 04, 2018
by
Ameen
You can also consider the very old simple method with decrea...
- Dec 05, 2018
by
Evtimov
Hey,
What would be the peak temp. ?
...
- Dec 06, 2018
by
Betty Hunt
Hi Betty ,
Its around. 215 to 220 deg C
...
- Dec 06, 2018
by
Ameen
Hi Evtimov,
Thanks for the feedback.
Will definitely t...
- Dec 06, 2018
by
Ameen
Hi Rob,
We used different Reflow Oven and noticed the com...
- Dec 06, 2018
by
Ameen
If you go this route vibration will not be your focus. there...
- Dec 06, 2018
by
Evtimov
63/37 is eutectic. It's either a liquid or a solid at a spec...
- Dec 06, 2018
by
Sr. Tech
Sr. Tech it is not as simple as that. Viscosity of material ...
- Dec 06, 2018
by
Evtimov
63/37 goes from solid to liquid. It melts and solidifies at ...
- Dec 07, 2018
by
Sr. Tech
Thanks, Ameen
...
- Dec 10, 2018
by
Betty Hunt
What is the difference of the components that fall and the o...
- Dec 11, 2018
by
davef
Hi ,
There is no difference as such in the component. So ...
- Jan 03, 2019
by
Ameen
Yes, the barycenter causes drop off since only leads at one ...
- Dec 25, 2019
by
sssamw