Electronics Forum | Sun Oct 19 15:02:10 EDT 2008 | Jdt13
We are having some issues with a RF PCB aprox 1" x 1". The pads are in the bottom of the PCB and it goes on the Top side of the mother board the pads of the RF board are like a BGA (square pads)and we have troubles to make the proper welding in the
Electronics Forum | Mon Oct 20 07:29:17 EDT 2008 | hussman
I assume you mean soldered and not welded. If the one pad that is having problems has a via hole next to it, it probably has more copper around it. Try running a hotter profile.
Electronics Forum | Mon Oct 20 15:24:52 EDT 2008 | davef
During reflow soldering, sometimes via fill with solder leaving the solder connection starved. Questions are: * Specifically, what is the problem you see? * Do the defective pads show that solder has melted in a uniform fashion? * How do the tempera
Electronics Forum | Mon Oct 20 21:57:58 EDT 2008 | jdt13
The problem that I see is the pads not soldered and I can see on the X-Ray the solder on the pad after reflow, and yes the solder has melted in a uniform fashion, I have not measured the diference of temperatures in each pad of the PCB, the size is a
Electronics Forum | Fri Oct 14 10:55:07 EDT 2005 | Mika
We have a simular problem with Ni/Au; especially whith pcb thickness more than 1.8mm. Note: These boards have been through reflow process also. 1.)Is there a maximum board thickness where it would be almost impossible to get a decent hole fil? 2.)Wi
Electronics Forum | Fri Oct 14 14:00:35 EDT 2005 | patrickbruneel
Mika, If I understand you correctly you compare hole fill of Ni/Au plated boards in a lead-free process with HASL 63/37 boards soldered with leaded solder. If this is the case you might be facing the challenges in Pb free wave soldering with the lim
Electronics Forum | Fri Oct 14 08:12:48 EDT 2005 | lyrtech
For LUPO: speed: 4.5 inch alloy: 63Sn/37Pb Solder pot temperature: 500 Quantity of flux: just to wet the board
Electronics Forum | Fri Oct 14 11:56:49 EDT 2005 | patrickbruneel
Mika, 1.) Is there a maximum board thickness where it would be almost impossible to get a decent hole fil? Answer: The thicker the board the further the solder has to travel and the more you depend on solderability of boards and components, machine
Electronics Forum | Wed Sep 20 10:45:11 EDT 2023 | kirill
Hello A scan board and scan full options has stopped working for me. Any idea how to make these functions work again ?
Electronics Forum | Thu Oct 13 15:41:30 EDT 2005 | lyrtech
Hi, We have a customer who give us a 20K board contract each year. It's only thru-hole components.The baord is HASL plated. So we pass it into our wave. No problems. Recently, our customer decided to go into GOLD PLATED finish. We take the same re
