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Scored Panel Depth

Electronics Forum | Mon May 21 17:37:51 EDT 2001 | davef

IPC-2222, Sectional Design Standard For Printed Board For Organic Printed Boards talks to scoring parameters in para. 5.3.1. You can obtain the standard at: http:///www.ipc.org. and Document Center [http://www.document-center.com/home.cfm/sid=71285

PCB Through Hole Size for Lead Free

Electronics Forum | Wed Nov 07 20:01:35 EST 2007 | davef

Josh: Hole size to lead diameter ratio is meaningless. Minimum and maximum component lead to finished hole size clearance do not vary according to component lead diameter or hole size. Regardless, here's what you want to smack those goofballs over i

PCB Thickness and Score Depth Standards?

Electronics Forum | Tue May 28 18:57:40 EDT 2024 | lambert

The scoring or grooving creation is found in IPC-2222 and describes the standard scoring parameters, with an illustration of the critical parameters. There are many articles on the web describing the process. Many of the articles promote a groove dep

Double sided design

Electronics Forum | Thu Aug 25 10:32:03 EDT 2005 | davef

IPC-2221A, Generic Standard on Printed Board Design, the base document that covers all generic requirements for printed board design, regardless of materials. From there, the designer can choose the appropriate sectional standard for a specific techn

Scoring

Electronics Forum | Sat Dec 01 09:12:27 EST 2001 | davef

Ah, there�s the rub. So often we see scoring requirements defined based on depth of cut. This ignores that the depth changes with a variety of factors, including: * Wear on the cutting blade. * Variation in thickness of the fabricated board. So, c

DFM for Wave

Electronics Forum | Mon Jul 10 20:59:14 EDT 2006 | davef

Dave Try: * IPC-2221 - Generic Standard On Printed Board Design * IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards Our old [euphemistically] friend Earl Moon has written extensively on DFM. Look at his site: http://

PCB Through Hole Size for Lead Free

Electronics Forum | Fri Nov 09 07:40:07 EST 2007 | jdumont

Thanks for all the great suggestions guys. We do not have topside heating but topside temps are where they should be before hitting the wave. No excessive copper in the area either. We are going to start with the most problematic board and use it as

PC Board Guidelines

Electronics Forum | Tue Sep 18 07:52:29 EDT 2007 | davef

Does the change from supplier to supplier as a result of: * Board definition? * Differences in processing at fabs? 3 Specification Fir Tree General Technical Specification 3a Design/Layout: * IPC-2221 * IPC-2222 3b PCB Fab: * IPC-6011 * IPC-6012 * I

Re: Resistance of traces

Electronics Forum | Tue Sep 14 13:49:14 EDT 1999 | Earl Moon

| I am looking to find a formula to calculate the resistance of circuit traces based on width | The old MIL-STD-275 became IPC-STD-275 became IPC-2221/2222. Anyway, they had/have simple graphic representations converting AWG standards into equivalen