Electronics Forum: pcb (Page 346 of 935)

Lead-free solder alloy: SN100C from AIM solder

Electronics Forum | Fri Jul 08 09:14:49 EDT 2005 | Jason Fullerton

I've tested boards with SN100C HAL finish, and wetting to the PCB finish was poor at best, using a no clean SAC305 paste.

MPM prestop position

Electronics Forum | Tue Jul 05 05:23:34 EDT 2005 | kentes

We have one set MPM AP25. Its prestop position is not stable,but stop position is stable. It often occur "time out" alarm when load PCB.Which one can help us.

MPM prestop position

Electronics Forum | Wed Jul 06 10:22:04 EDT 2005 | PWH

At times we have had this problem with our AP25 due to one of the conveyor belts slipping. Load a PCB and check to see that both conveyor belts are running at the same speed. If not, tighten the one that is dragging. Hope this helps.

SMT Backward Compability

Electronics Forum | Wed Jul 06 04:38:43 EDT 2005 | javi

AJ, Thanks for your input, forgot to inform that there is none BGA on the PCB. I also discovered that there was another topic related mixed component that give me support enough. Will inform my supplier to perform the process in the SMT line and not

How to remove paint from back of PCB without damaging ?

Electronics Forum | Mon Jul 11 11:00:05 EDT 2005 | mmjm_1099

Alcohol and a scrub brush or try some 440R (http://www.smartsonic.com/). This stuff cleans almost anything off.

Lead Free Stencil Design

Electronics Forum | Thu Jul 14 16:08:07 EDT 2005 | russ

Stencil thickness is related to PCB design and is not related to paste type. If you release with a 8 mil stencil then use an 8 mil stencil. Of course there are pastes that release bteer than other and what not but use area and aspect ratios to dete

Very fishy missing solder paste issue

Electronics Forum | Tue Jul 19 12:07:03 EDT 2005 | CLampron

Sr tech, It is in the PCB header information. F2 from the layout editor then F1 to view through the camera. Regards Chris

Boards getting

Electronics Forum | Wed Aug 03 14:17:28 EDT 2005 | GS

What about PCB construction?: - CEM (2-3....)? FR4 ?....? - how many layers - what about TG ? GS

Large PCB Paste Printing

Electronics Forum | Wed Aug 03 08:42:02 EDT 2005 | ianlg

Hi Here is one that can handle the size board that you are looking to print. http://www.reprintservices.co.uk/R29_Series_Screen_Printer.html Hope that this is of help. Regards Ian

Large PCB Paste Printing

Electronics Forum | Wed Aug 03 10:03:25 EDT 2005 | Rob

There's always a used MPM UP3000, they're cheap.... ....but there is a very good reason for this.


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