Search results for query: *

You're right it was similar, this was meant to ask about the effects of more layers in relation to the problem, and to find information from people who have experience dealing with a large number of layers and potential pit falls concerning RoHS and lead free soldering. If I should have posted...

He is absolutely right about the increased solder temps causing problems at least from what I am seeing at our facility. The 6 layer board has been in use for 4 years now, and up untill we converted to lead free solders and RoHS compliand boards we never saw a bubble. We went so far as to run...

I am looking for some information on multi-layer PCB's and potential problems that may come with more layers and possible manufacturers. We are currently using a 6 layer board made of FR4 material, and we have had some bubbling issues due to moisture, and RoHS soldering temperatures. We are...

Upon further discussion with our board house, they have not been baking the boards prior to soldering. I have baking temps and times, but my concern is how to place the boards in the oven. For example can they be stacked on ontop of eachother and set in there, or do they need to have spacers...

Once again thank you for the help. Comcokid the link helped alot, and right now I have found several possibilities for the bubbles, and I will begin eliminating them one by one. Thanks agan.

Thank you for the feed back it is greatly appreciated. I am still waiting to get the findings back from the board house. I was a little concerned that this may be caused by the increased temperatures used because of lead free solder paste. The boards are specd to be ROHS compliant, but does...

The company I work for has been experiencing problems with bubbles forming between layers in our Printed Circut Boards. The bubbles have caused traces to break and pull away from pads and vias. The problem only occures after or during the population of the surface mount components. I would...

I know what you are dealing with. I have just finished redoing our assembly instructions. I used power point with the intention of implementing a training presentation for new employees. So far it is working great, but what a pain to get set up.