Electronics Forum | Sun Dec 22 22:38:58 EST 2019 | Elsa
We can provide better suggestions to customers, but customers do not agree, we will make products according to the original design of the customer, otherwise it will cause disputes. There is also a case,we are not sure whether the customer design has
Electronics Forum | Thu Dec 05 14:04:58 EST 2019 | slthomas
It just looks like a transformer, as had been mentioned earlier, but w/o a part number (usually the parts are marked with some ID code) it's hard to know for sure. If that's the case and what we're seeing is one of the leads for the windings that c
Electronics Forum | Thu Dec 26 15:27:22 EST 2019 | emeto
Lead Free SMT 1. Stencil printer Squeegees s -should have Pb free pair 2. Reflow oven - should be able support Pb- free higher temperatures. 3. In case you have inspection table on the SMT line - should have Pb-free mats(usually different color)
Electronics Forum | Fri Dec 27 14:27:40 EST 2019 | slthomas
We switched to a REL0 T3 paste, Amtech LF-4300. It wets the castellations more consistently. I believe that in our case it was more of a plating wetting issue with the parts, but yours sounds more like a pcb finish or thermal issue. That larger pad
Electronics Forum | Thu Jan 02 07:04:57 EST 2020 | dontfeedphils
Pretty large solder-ball. Looks like it may have come from the ground pad since it's so large, in which case I would reduce the print coverage on the middle/ground pad and see how it works for you. You verified that these parts have the groundpad a
Electronics Forum | Fri Jan 10 13:21:34 EST 2020 | emeto
Yes, think of 3prints/minute 24 hours. This is about 4000 prints a day. than you have a marginal process, because customer locked design and doesn't want to change anything. So in our case for 70k-100k prints and we had to change them as the perform
Electronics Forum | Wed Jan 15 12:10:22 EST 2020 | emeto
Avillaro, I don't have hands on experience with Vapor Phase equipment, but my guess is that it will work better for thick boards like yours. Trying another chemistry is a logical move. May be it is worth trying the fixture for connector flatness as n
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 | Thu Feb 27 15:14:53 EST 2020 | SMTA-Alex
This happens with either old tape, the cover tape doesn't stay sealed on the left side, or is the seal is too far to the right, the knife lifts the cover tape. There isn't much you can do in this case. Your choices are: switch the component into an A
Electronics Forum | Mon May 18 15:30:07 EDT 2020 | dwl
I've seen that before, had to switch to a no clean process for those boards. It's not typical for ferrites, usually its safe to wash them. Out of curiosity does the Data sheet say anything about whether or not they can be washed? In my case we lear
