Electronics Forum: ipc-2221 (Page 1 of 5)


Electronics Forum | Wed Feb 22 20:33:25 EST 2006 | davef

Here's your design rules: * IPC-2221 * IPC-2222 Bonus is that they include the works, not just break-away tabs

Thermal Relief

Electronics Forum | Wed Mar 03 09:05:28 EST 2004 | davef

Look to IPC-2221, 9.1.3 Thermal Relief In Conductor Planes

Through holes

Electronics Forum | Thu May 09 00:08:01 EDT 2002 | techment

Could someone provide help regarding IPC's recommendation on Plated Through hole's --- lead to hole ratio. I can't find it in IPC-2221 and IPC-SM-782. Thank you very much

Fudical, where, size, etc

Electronics Forum | Wed Nov 02 20:27:08 EST 2005 | davef

Why stop at fids: * IPC-2221 - Generic Standard On Printed Board Design * IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards

Gold coated spring contacts

Electronics Forum | Tue May 22 18:21:15 EDT 2001 | davef

Again not quite what your looking for, but close, consider IPC-2221, Generic Standard On Printed Board Design, Para. 4.4.4 for minimum requirements for edge board connectors, as a baseline.

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 17:03:44 EST 2002 | rob_thomas

We follow IPC-2221 recommendations for Au and don't have a problem as long as the Ni is under 150 microinches.This ensures a consistent process for us.Also we do plasma clean after SMt and prior to wirebond.That makes a big difference. Rob

PCBA Standards

Electronics Forum | Wed Jul 07 17:47:00 EDT 2004 | davef

For bare board design for test, try: * IPC-2221 - Generic Standard On Printed Board Design * Section standard for the board type [eg, IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards]


Electronics Forum | Sat Oct 15 15:57:11 EDT 2005 | GS

Organic Solderability Preservative, is a definition that you can find, for istance, on IPC-2221A (geneiric standard on printed board design) Tabel 4-3 (Final Finisch, etc) Regards............GS

Conductor or Trace Spacing

Electronics Forum | Wed Jul 06 20:40:40 EDT 2005 | davef

Voltage does not flow. Current flows as a result of a change in voltage. Current capacity of traces * Graph is IPC-2221 paragraph 6.2, Figure 6.4 * http://www.geocities.com/CapeCanaveral/Lab/9643/TraceWidth.htm

Solder Paste Inspection

Electronics Forum | Fri Feb 02 08:22:10 EST 2007 | davef

Try: * IPC-2221, 5.4.3 Datum Features * http://www-ese.fnal.gov/ese-dfe/SMEMA%20fiducial%20mark%20standard.pdf

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