Electronics Forum: copper and plated and vias (Page 2 of 4)

Immersion Au and ENIG surface finishes

Electronics Forum | Thu May 02 07:11:10 EDT 2002 | davef

They probably the same. Most likely someone is saying immersion gold [immersion Au] as a short hand for ENIG [ Electroless Nickel - Immersion Gold]. It is very uncommon to plate gold directly on copper, because gold and copper form a brittle interm

Solder Ball and Splash after Hand Soldering

Electronics Forum | Sat Jul 25 08:47:25 EDT 2009 | davef

Both "moisture content of bare board" and the "thickness of the copper plating in the PTH" are related to each other. As you heat the solder connection, moisture in the board boils and out-gasses through the solder connection. Plating with the proper

Reflow soldering problems and traces under component

Electronics Forum | Mon Jul 18 12:24:53 EDT 2016 | oleksz

Some people involved in PCB assembly process claim that SMD components reflow soldering problems are often caused by traces running under a component. According to this claim, trace (or any copper) covered by solder mask and placed under SMD componen

Reflow soldering problems and traces under component

Electronics Forum | Mon Jul 18 12:25:30 EDT 2016 | oleksz

Some people involved in PCB assembly process claim that SMD components reflow soldering problems are often caused by traces running under a component. According to this claim, trace (or any copper) covered by solder mask and placed under SMD componen

Re: Green coating and through-hole plating

Electronics Forum | Thu Aug 13 12:55:46 EDT 1998 | Dave F

| Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: http://www.pwbrc.org/ a

QFN/BTC Side Termination - Fillets and Wettability

Electronics Forum | Wed Jul 19 12:54:04 EDT 2023 | calebcsmt

Since side fillets are not a requirement for QFNs/BTCs due to some packages not having wettable side terminations, how does one determine if the side terminations are actually solderable/designed for wetting? Is it simply if the side terminations

Solder Ball and Splash after Hand Soldering

Electronics Forum | Fri Jul 24 23:20:11 EDT 2009 | umar

Hi Dave, Thanks on your feedback, May I know the how's the contributing of Moisture content of bare board and the Thickness of the copper plating in the PTH to the solder ball and solder splash during hand soldering process ?

Percentage of Blowholes and Pinholes can eliminate.

Electronics Forum | Thu Oct 17 05:16:44 EDT 2013 | vincentdesilva2003

Anyone can help me how many percentage of blowholes and pinholes if i do the followings: 1. Increase copper plating thickness more than 25 microns. 2. Pre Baking of PCB to remove gassing by drying out the PCB's

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon

| | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | Xingsheng | Xingsheng: Welcome. | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | Web resources: http://www.pw

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 08:59:51 EDT 1998 | Dave F

| | | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | | Xingsheng | | Xingsheng: Welcome. | | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | | Web resources: htt


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