Electronics Forum | Thu Mar 11 10:31:57 EST 1999 | Justin Medernach
| NASA CommQuest | | | Photopolymerized Conducting Polymers | | Directions: | 1.Please read the information provided on this technology. You may follow the links to additional information resources below. | | 2.After evaluating the technology,
Electronics Forum | Sun Oct 09 11:16:06 EDT 2016 | mekmat
Hello, I would like to ask you about the minimal distance between components and border of pcb especially V-cut to avoid crack of component during depaneling? I need some standard (IPC or something) where is this defined? Thank you for your support
Electronics Forum | Sun Apr 15 14:01:10 EDT 2018 | mekmat544
Dears, I would like to aks you, about minimal distance between solder pads for THT components for selective RoHS soldering. Is there some standarts, where I can find this information? Enclosed is draft, what I mean. Thank you very much for your suppo
Electronics Forum | Sun Oct 09 16:57:30 EDT 2016 | davef
IPC 2222A Sectional Design Standard for Rigid Organic Printed Boards, 5.3 Design Requirements for Printed Board Assembly
Electronics Forum | Sun Oct 30 12:39:13 EDT 2016 | mekmat544
Thank you for your answer, but I am litte bit confusing. There are parameters of V-scoring but with put values. How can I get values for V-scoring for pcb 1,6mm thickenss. Thank you. M.
Electronics Forum | Wed Apr 18 13:29:49 EDT 2018 | slthomas
I did not read through this but hopefully there is something of value here: https://www.smtnet.com/library/files/upload/Design-Rules-Selective-Soldering.pdf
Electronics Forum | Wed Apr 18 14:26:31 EDT 2018 | dleeper
One thing to consider is the length of the leads protruding from the solder side of the PCB will have an effect. Longer leads will be more prone to bridging than shorter leads with the same spacing.
Electronics Forum | Wed Apr 18 15:10:10 EDT 2018 | charliedci
If someone can find a RoHS specific standard I would be interested. IPC-2221 nor 2222 separate leaded from lead free (that I could see). Charlie
Electronics Forum | Tue Nov 01 12:28:36 EDT 2016 | comatose
It depends. Are you hand breaking them, rotary knife or linear knife? Hand break you want to be about 5mm (and it isn't a great practice even then) with a rotart knife you want to keep parts probably 3mm, especially capacitors. With a linear knife we
Electronics Forum | Sat Nov 05 20:23:11 EDT 2016 | sarason
Close but not to close, would have to be the spec. Or depends on your separating technology. Prerouted boards on a panel, you could go right up to the edge. V-grove you will need more distance, maybe 2mm's or more. The distance from the panel edge to
