Electronics Forum | Fri Jan 25 19:01:35 EST 2013 | hegemon
My first guess is that the plating in the barrel (via) has failed and allowed laminate/epoxy egress into the barrel and out to the surface of the board. Just a guess based on the picture.... 'hege
Electronics Forum | Wed Mar 20 07:16:03 EDT 2013 | vinitverma
I have customers populating LEDs on flex PCBs (with Aluminum support plates) with sizes up to 1,200mm (say 4ft) even on old Philips/Assembleon Topaz machines. What components are you planning to assemble on your flex PCBs?
Electronics Forum | Mon Mar 25 14:41:50 EDT 2013 | markhoch
Just a thought, but have you pulled the datasheet for the part and confirmed that the plating on the leads is compatible with your current process/profile?
Electronics Forum | Wed Jul 17 10:22:15 EDT 2013 | rgduval
Sure. Section 7.4 covers unsupported holes, and defines the usual standards. Clinching, fillet on the plated side, lead protrusion, etc. Cheers, ..rob
Electronics Forum | Thu Sep 05 23:32:29 EDT 2013 | winson16
This connector was designed with gold flash plating and the lead's surface was become dull and some black mark was observed on the contact surface.
Electronics Forum | Thu Oct 17 05:16:44 EDT 2013 | vincentdesilva2003
Anyone can help me how many percentage of blowholes and pinholes if i do the followings: 1. Increase copper plating thickness more than 25 microns. 2. Pre Baking of PCB to remove gassing by drying out the PCB's
Electronics Forum | Mon Dec 30 08:14:45 EST 2013 | jax
I was unaware of any Pb-Free process capable FR-1 laminate... not to mention capable of Though Hole plating that would be expected when wave soldering. What is the Td and Z-expansion for the laminate you are using?
Electronics Forum | Thu Jan 02 23:39:33 EST 2014 | mysmt
Hi, FR1 laminiate used is only for single side type and THD plating is not used. I have also attached laminate manufaturer's datasheet. Thanks,
Electronics Forum | Thu Feb 13 08:08:41 EST 2014 | cyber_wolf
The manual says to bake the edge chains at 400C to clean them. Is anybody doing this ? I need to take my edge chains to a heat treat facility to clean them ? I don't want to spray oven cleaner on them as they appear to be plated with nickel or so
Electronics Forum | Wed Mar 05 16:19:51 EST 2014 | cstanton
Is there a directory for North American electroforming houses? My specific need is for large area production (e.g., Fuji 4000 screens, etc.) of 29" x 29" or greater. Any specific recommendations would be gratefully accepted. Photo-plotting capabil
