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 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 | Thu Feb 13 03:54:57 EST 2020 | majdi4
we are obliged by customer specifications that there will be no glue despensing process on the production line.. also that the glue dispensing process is very complicated for this case .. we could have glue splash on top surface of pcb so that will
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.
Electronics Forum | Fri Feb 14 12:22:57 EST 2020 | etmpalletguy
OK, you can't glue, Pallet Guys pallets are out the door, dual line reflow prevents from any lower temp solder paste.... Do you have a 3D printer? Are there parts underneath the connector in question? Measure the PCB thickness, pint out a custom hold
Electronics Forum | Wed Feb 12 02:38:02 EST 2020 | majdi4
Hi there , I agree with phil .. but we cannot change the architecture of the card to mount the connector on the 2nd side. Steve , we are producing large series, so we can't manually ship bond the connector .. for the moment, we cannot invest in a gl
Electronics Forum | Tue Feb 11 10:51:20 EST 2020 | slthomas
To predict whether or not a first pass part is going to come off during the second pass you need to calculate the ratio of weight/soldered surface area. According to a couple of different sources that I've dug up, maximum is around 44 grams/in.^2. I
