Electronics Forum | Wed Feb 12 10:17:15 EST 2020 | emeto
Would you consider a light reflow pallet on second side holding the connectors in place and preventing them from moving?
Electronics Forum | Wed Feb 12 12:58:09 EST 2020 | emeto
No to redesign, no to glue dispensing and no to pallets. Now you should change gravity ...or pray :) I am interested to see what other solution you can come up with.
Electronics Forum | Wed Feb 12 16:38:58 EST 2020 | majdi4
Hahaha we already praying.. There is always a solution for any problems.. That's why am trying to do brainstorming with you all.. It's a pleasure to share ideas
Electronics Forum | Wed Feb 12 19:06:28 EST 2020 | SMTA-Alex
I see that the connector has plastic alignment pins. Is there any reason you can squirt a drop hi-temp "Crazy" glue into each hole, after the bottom side assembly and before printing the top side?
Electronics Forum | Wed Aug 30 00:16:15 EDT 2000 | Craig
We are reflowing ceramic resonators and are finding their tops falling/popping off when handling the pcbs during final assy. The epoxy seems to be coming off the components base and adherring to the lid. The components are "RFM resonators", case type
Electronics Forum | Mon Dec 03 15:03:49 EST 2018 | dleeper
I can't open your spread sheet to see how you calculate this, but usually this sort of calculation assumes the leads are spaced symmetrically on both sides of the part and the center of mass is between them. Gravity pulls the part down, while the wet
Electronics Forum | Thu Dec 06 09:24:10 EST 2018 | ameenullakhan
Hi Rob, We used different Reflow Oven and noticed the component drop is less 1 out of 24 components. But not able to analyze, why its falling more in other reflow oven. Our maintenance team is assuring there is no vibration in any of the oven. And
Electronics Forum | Mon Dec 03 03:58:24 EST 2018 | ameenullakhan
Hi , Observed component drop during second reflow. Component : Image attached Perimeter : 0.15 to 0.025 cm No of leads : 22 Solder Alloy : Sn63/Pb37 As per component adhesion calculation the component should not fall. ( Excel Attached ) Profile
Electronics Forum | Wed Feb 12 10:30:40 EST 2020 | majdi4
we have already taken this idea into consideration but as a plan b .. like i said before, we are producing large series of cards, then the lights reflow pallet will disrupt the normal production process (storage in the racks, convoys, machine screen
Electronics Forum | Mon Feb 24 00:59:47 EST 2020 | sssamw
=0.08g/mm2, make it less than 0.08. And maybe the connector gravity center location is a cause also. If no machine issue (vibration, wind,etc), and you cannot change the design/material then you can use SMT glue to fix the connector during reflow.
