Electronics Forum | Mon Jun 03 13:10:35 EDT 2019 | gregoryyork
We recommend a ramp soak spike profile for HASL finish, so everything gets nicely heated during reflow, we soak around 180C and peak at 245- 250C and don't have any issues as long as the levelling isn't too peaky.
Electronics Forum | Thu Aug 01 05:16:15 EDT 2019 | ameenullakhan
Hi , I have attached a excel file. Hope it might help you. Excel has SMT defects. Few reflow profiling issues are captured over there. Regards, Ameen
Electronics Forum | Fri Aug 16 12:57:17 EDT 2019 | emeto
To be in the range of profile for a paste, doesn't mean it is ideal. Check temperature on the Side A components while running side B profile.
Electronics Forum | Fri Jan 03 12:48:23 EST 2020 | cyber_wolf
Besides correct stencil design, solder paste chemistry can have a profound effect on voiding. People will tell you reflow profiles. I have never in my career seen a reflow profile have any effect on voiding unless it is grossly off.
Electronics Forum | Thu Jan 30 10:12:00 EST 2020 | emeto
More detail Jinesh. Profile, datasheet of the part, stencil design, PCB finish, soldering material. Initially I am assuming you use pallet to reflow 0.2mm thick board.
Electronics Forum | Fri Jan 31 00:20:47 EST 2020 | jineshjpr
Thanks for your response, yet to try with RTS Solder profiles, Have you any additional comments on this RTS Temperature specifications like Time above liquidus, Peak temperature if any..??
Electronics Forum | Fri Jan 31 00:21:28 EST 2020 | jineshjpr
Thanks for your response, attaching the solder profile for your verification. The part NXP Make PCA2002 Micro BGA 8Ball Package.
Electronics Forum | Fri Jan 31 07:45:48 EST 2020 | dontfeedphils
Who's controlling the cooling rate when profiling? If so, what's the max cooling rate you're trying to hold?
Electronics Forum | Thu Feb 24 13:02:19 EST 2022 | dontfeedphils
Could you include some info about how the thermocouples were attached (pic) and the resulting profile?
Electronics Forum | Thu Feb 24 15:36:34 EST 2022 | dontfeedphils
Looks like a decent profile. Only recommendation I have would be to possibly try and high-temp solder the thermocouples rather than the aluminum tape/kapton, only because you can get air-gaps and inaccurate readings using the tape method on assemble
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