Electronics Forum | Fri Oct 10 19:24:53 EDT 2003 | MA/NY DDave
Hi SMTAnet, SMTnet, You already got good answers for how to go forward. I believe that this 50mils is a remnant of the days when we started at 125 mil grids and started the process of going down to 100mil grids, SMT. My gosh who would ever want a 1
Electronics Forum | Sat Aug 14 21:31:31 EDT 2004 | Daveylau
I'm currently working in a SMT factory in China. I'd like to know what preparation that I would need to change from leaded to lead free soldering. 1.Starting with the PCB production, things that I need to concern about are solder mask, Cu protection
Electronics Forum | Thu Apr 01 14:43:26 EDT 2010 | cbart
You say its in both smt and through hole, but, are you waving the SMT parts as well, I assume yes since you think its dross in the joints. Questions: 1- do you have higher mag scopes that you can zoom in a little more to see if these are voids or dr
Electronics Forum | Fri Nov 16 03:38:03 EST 2018 | premkumar_haribabu
Hi all, We have to solder a nickel tabs ( coming in SMT reels ) in to HASL PCB finish pads using refow oven & during this we facing poor wetting issues, more voids & we done pull strenth , its came out with in 1 kg ,I doubt that nickel coated materi
Electronics Forum | Wed Jun 29 12:04:29 EDT 2022 | kumarb
Hi. Alpha metals recently informed us of: Alpha OM-565 low temp solder which they note is popular with pin-in-paste process of through hole parts so that we can solder inside of our SMT oven (1809EXL). We commonly use ROHS DSUB connectors (9 to 78
Electronics Forum | Thu Jun 30 12:21:33 EDT 2022 | kumarb
Thanks. Yes, we have attempted to use standard ROHS profiles in the past and turned our THT connectors into 'chucky dolls' after the PCBA left the oven. We then realized that we need the high temp nylon connectors to allow for the use inside the SMT
Electronics Forum | Tue May 17 16:46:52 EDT 2005 | davef
Most placement machine equipment suppliers offer software for line balancing. What's with Fuji? Fujitrax is a system developed in order to attain high levels of "progress management, quality management & traceability" over several SMT lines, throug
Electronics Forum | Fri May 25 18:17:56 EDT 2001 | davef
No chart for you, but I will comment that a prudent product manager would require a substantial reason to accept the risk of product failure and loss of profit to redesign his / her product. We merrily assemble many boards each month that were desig
Electronics Forum | Wed May 14 09:36:54 EDT 2008 | d0min0
as most of our components are described in AML list, we can't play with that so much... so we focus on preparing the line tools/materials before the change (paste, spatulas, test pcb) - and Yes all the dressing for Juki is ready, for TCM most of the
Electronics Forum | Tue May 26 06:56:40 EDT 2009 | xinxi
Hi! From your post, it seem like the wave did not really touch the component. You probably need to get the both wave height correct and that it hits the component.It is normal for solder to come through the PCB when using chip wave. The through-hole
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