Electronics Forum | Thu Sep 24 09:00:30 EDT 2009 | stepheniii
Those articles are talking about screening before PTH placement. They are talking about pin in paste. He would still have to stencil the glue before the PTH parts. How would the squeege go over the clinched leads? And if he does get a new line I wo
Electronics Forum | Tue Sep 22 00:51:53 EDT 2009 | rohitfast
In our industry we are producing PCB on which generally number of total component is around 2000. My query is maximum how many component or CRD we can rework in a single board, and what should be the criteria to scrap the board? Is there any specific
Electronics Forum | Tue Sep 22 07:18:19 EDT 2009 | davef
While you're waiting for others to reply, search the fine SMTnet Archives to find postings like: * http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=23229 * http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=26457 * http://www.smtnet
Electronics Forum | Fri Sep 25 16:38:56 EDT 2009 | esoderberg
empf issued an excellent study of calculated solder volume in the 90's. It used lotus 123 but is easily used in excel. I have used it for over 10 years. The only thing wrong is with leadless components. the amount of paste required generally is insuf
Electronics Forum | Fri Sep 25 13:09:42 EDT 2009 | rmitchell
Thanks to those that responded. I eliminated the light curtain problem. The metal plate the light curtain pcb bolts to was bent. I had it aligned in our machine shop and it worked properly. I forgot to mention the error was pooping up with no fee
Electronics Forum | Fri Sep 25 14:58:33 EDT 2009 | gantry228
It is apparently a Q-series machine, if the adjustment for pitch and roll doesn't work. You may have to loosen or remove the quadalign then check the "wavey" washers to ensure they are there and opposing each other (these provide like a spring effect
Electronics Forum | Sun Sep 27 22:39:55 EDT 2009 | rajeshwara
The same issue i faced 2 yrs before , i sugest 1. Use stencil of 4 mils ( Take care of Aspect Ratio and Area Ratio ). 2. Use Solder Paste of Type 4.5 and Viscosity in between 1100 to 1300. ( Try Solder Paste of Cookson or Alpha metals : OM338 T45-L
Electronics Forum | Thu Oct 01 06:22:48 EDT 2009 | rajeshwara
We approved the Reflow Profile from Cookson Solder Paste Manufacturer we are using. Now I am suspecting on method of vias designing below that QFP.There is exposed pad for that QFP and we print solder paste there , but when i see under x-ray there is
Electronics Forum | Tue Sep 29 12:07:40 EDT 2009 | swag
The electronics degrade over time and you get troubles like you're having and you need to install a "noise reduction kit". Basically it's a new interface card set and some cables. You might call Speedline and ask tech. support if this is something
Electronics Forum | Wed Oct 07 10:04:07 EDT 2009 | soudomphong
Thank you for responding. I called Speedline tech > support he think there is a short some where in > the motor. I changed the motor out and still have > the same problem. The chain is normal, and using > automatic lubricating. I will check more
