Electronics Forum | Wed Sep 08 05:17:04 EDT 2010 | eddtsk
Hi, ran across a batch of PCB that has white silkscreen during receiving but turns purple/pink after our reflow process. SEM/EDX test can show there is no significant different element between the white and purple silkscreen. Can any help advice what
Electronics Forum | Wed Sep 08 20:14:27 EDT 2010 | eddtsk
Hi Davef, ues, its ENIG. But do you know what the causes this? We send the board for testing but finds nothing defferent chemically between the white and the purple silkscreen. The supplier claim that its our process that is caused the changes.
Electronics Forum | Thu Sep 16 00:23:43 EDT 2010 | eddtsk
Hi All, thanks for your precious reply. We had been trying very hard to ocnvince the customer that there is nothing wrong with the PCB but they are still unwilling to accept the change of silkscreen color. We attribute the silkscreen issue to a bad b
Electronics Forum | Wed Sep 15 23:48:43 EDT 2010 | mily
We drilled a hole in the centre of the LGA and put the thermocouple inside, so we measure the exact temperature between PCB and device. http://www.jewellerybeadsale.com/
Electronics Forum | Sun Aug 28 23:53:58 EDT 2016 | aemery
I don't think there is a camera off message in the software, but I might be wrong. So I am making a bit of an assumption here that you didn't have a displayed image and your error was a fiducial not found error. I am also wondering if you decided to
| 1 |
Products, services, training & consulting for the assembly, rework & repair of electronic assemblies. BGA process experts. Manufacturers Rep, Distributor & Service Provider for Seamark/Zhuomao and Shuttle Star BGA Rework Stations.
Training Provider / Manufacturer's Representative / Equipment Dealer / Broker / Auctions / Consultant / Service Provider
1750 Mitchell Ave.
Oroville, CA USA
Phone: (888) 406-2830
.gif)
