Full Site - : white residue on wet circuit boards (Page 12 of 17)

Re: More informations on water clean for CSP/BGA package

Electronics Forum | Wed Oct 06 12:03:12 EDT 1999 | Graham Naisbitt

| | Hi, | | | | Help! Could anyone help to enlighten me on this? | | | | Question: | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n

More informations on water clean for CSP/BGA package

Electronics Forum | Wed Oct 06 00:26:04 EDT 1999 | Karlin

| Hi, | | Help! Could anyone help to enlighten me on this? | | Question: | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a normal water cl

Re: More informations on water clean for CSP/BGA package

Electronics Forum | Wed Oct 06 11:40:41 EDT 1999 | Debbie Alavezos

| | Hi, | | | | Help! Could anyone help to enlighten me on this? | | | | Question: | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n

Need help on PCBA Cleanliness Standards and Specs

Electronics Forum | Tue Nov 25 16:26:43 EST 2003 | tdurston

We are trying to establish requirements and process controls for completed, cleaned SMT assemblies. We have problems with our high impedance circuits (100 meg ohms) being affected by residue. Some boards require additional cleaning cycles to remove

Re: silver finishes on pcbs - what about the wave?

Electronics Forum | Fri Dec 15 08:00:57 EST 2000 | Pete B

John, We regularly wave solder electroless silver finished boards (Alpha Level)with mixed SMD and through hole parts and do not have any problems. We have changed a number on PCB's from HASL to electroless silver, mainly for the benefits at SMD whe

Re: More informations on water clean for CSP/BGA package

Electronics Forum | Wed Oct 06 03:58:25 EDT 1999 | Brian

| | Hi, | | | | Help! Could anyone help to enlighten me on this? | | | | Question: | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n

aluminium wire bonding on Electroless Nickel + Immersion gold

Electronics Forum | Mon Aug 27 15:06:29 EDT 2001 | davef

This otta push Wolfgang over the top ... Recommended reading G.G. Harman, Wire Bonding in Microelectronics : Materials, Processes, Reliability, and Yield, 2nd edition, McGraw-Hill Electronic Packaging and Interconnection Series, 1997. G.G. Harman, R


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