Electronics Forum | Tue Nov 26 09:05:48 EST 2019 | scotceltic
Thank you for the response. Nothing in the datasheet referring to a percentage of thermal pad coverage. I am thinking along the same lines. We are not failing any thermal or functional testing as is so am thinking there is no problem here except m
Electronics Forum | Tue Nov 26 09:07:16 EST 2019 | scotceltic
I am more worried about those voids also instead of the voids in the thermal pads. I still can't find any IPC spec that calls out a min. void percentage other than on BGA packages.
Electronics Forum | Tue Nov 26 18:35:20 EST 2019 | slthomas
It's hard to tell from the image but it looks like there isn't much room for a heel fillet. Seems like that could contribute to your voiding (or poor wetting) if there isn't enough paste volume there.
Electronics Forum | Wed Dec 11 07:58:38 EST 2019 | clockwatcher
Although this is not technically a bottom termination component, the method of attachment of the thermal pad is a bottom termination attachment. For bottom termination components IPC states that "thermal pad void criteria shall be established between
Electronics Forum | Sat Jan 04 08:58:30 EST 2020 | SMTA-Davandran
I do faced this problem and and not solve. Fortunately, did not seeing any functional failure from this voiding which approx 50%.
Electronics Forum | Mon Nov 25 02:15:07 EST 2019 | mk15
it is possible to test x belt motor and x wagon motor.
Electronics Forum | Sun Nov 24 20:43:15 EST 2019 | sssamw
If you want to check if solder mask on tented via, better to do cross section to have a clear view. Sometime supplier will not tell you the truth once you ask question for potential quality issue.
Electronics Forum | Fri Dec 20 05:44:43 EST 2019 | hemantpang23
Thanks for your reply We checked all the hardware found ok voltages are as per specifications Suspecting software issue but don't have software for installation Please confirm if you have this software version 04.03 so that we can have last try
Electronics Forum | Sun Nov 24 12:44:10 EST 2019 | bane016
I have problem with feeder cart.I have no voltage on any of the 17 feeder connectors, and when i insert the cart in the machine i get the message that the cart is not connected. I have a voltage to one separate connector normally.
Electronics Forum | Mon Nov 25 20:52:47 EST 2019 | cbeneat
Are the arms pulling the cart all the way in? Possible part blocking the limit switch. does the cord have power? If I remember correctly, we once had to adjust the mechanical stops on one of ours so it would make the switch.
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