Electronics Forum: ratio (Page 1 of 49)

Pin to Hole ratio

Electronics Forum | Wed Jul 20 13:28:02 EDT 2005 | Theo Doucakis

I am looking for some guidance on the proper pin to hole ratio for waved pins. Theo

Pin to Hole ratio

Electronics Forum | Thu Jul 21 13:56:48 EDT 2005 | russ

Thanks Dave, Now I am going to find out if I am consistent with the IPC.

Pin to Hole ratio

Electronics Forum | Thu Jul 21 22:14:34 EDT 2005 | Ken

Anyone else disagree with IPC-2222 for min-lead to max hole in the application of ribbon lead connector styles?

Pin to Hole ratio

Electronics Forum | Wed Jul 20 13:47:42 EDT 2005 | russ

IPC has this. I cannot remember which one, Here is what I do for a quick reference. square pin - add .015" to the pin dimension e.g. .025" square pin gets a .040" hole. OR if the pins are large get the max dimension )e.g. a .025" square pin has

Pin to Hole ratio

Electronics Forum | Wed Jul 20 17:23:19 EDT 2005 | davef

IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards, Table 9-3 � Plated Through Hole Diameter To Lead Diameter Relationships will give you the standard information you require.

BGA ball to pad ratio

Electronics Forum | Tue Feb 26 10:42:48 EST 2002 | davef

Consider the hierarchy presented in http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=18112

BGA ball to pad ratio

Electronics Forum | Tue Feb 26 07:55:23 EST 2002 | cyber_wolf

I know that there is an IPC spec. for board pad size design for BGA components. After a little research we have found that recommendations vary from component manufacturers to board houses. (These recommendations are different than what IPC says....

BGA ball to pad ratio

Electronics Forum | Tue Feb 26 08:02:30 EST 2002 | cyber_wolf

I know that there is an IPC spec. for board pad size design for BGA components. After a little research we have found that recommendations vary from component manufacturers to board houses. (These recommendations are different than what IPC says....)

Re: aspect ratio for massive components on the solder side of double-sided reflowed PCBs

Electronics Forum | Thu Oct 19 16:10:44 EDT 2000 | John Thorup

Much has been said on this subject. Try a search of the archives for the terms "Phil Zarrow" and "surface tension". You'll likely find what you need.

Re: aspect ratio for massive components on the solder side of double-sided reflowed PCBs

Electronics Forum | Thu Oct 19 16:10:48 EDT 2000 | John Thorup

Much has been said on this subject. Try a search of the archives for the terms "Phil Zarrow" and "surface tension". You'll likely find what you need.

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