Electronics Forum: tinning gold smt terminals (Page 1 of 10)

SMT gold plated components

Electronics Forum | Wed Aug 06 16:35:31 EDT 2003 | Carol

This is an old topic, but keeps coming up. Solderability and reliability issues with SMT gold plated terminations when used with tin/lead solder paste/hassle finish PWB. I need to know which standard (mil, IPC, J-STD??) tells you all about the probl

62sn36sn2ag on gold terminations?

Electronics Forum | Tue May 13 06:57:10 EDT 2003 | davef

Your vendor site is totally correct. 2Ag is an excellent solder, but it does nothing to prevent tin and gold from reacting chemically. An earlier poster is correct gold goes into solution in liquid solder very fast, less than a second. Gold and ti

62sn36sn2ag on gold terminations?

Electronics Forum | Mon May 12 23:28:33 EDT 2003 | dehlers

To the best of my knowledge and experience the 2 % Ag component is not for embrittlement but rather to reduce gold scavenging caused by the propensity for tin to react with the gold. I have seen eutectic tin/lead actually disolve gold wire after a f

SMT gold plated components

Electronics Forum | Wed Aug 06 20:50:42 EDT 2003 | davef

Well, if it "keeps coming up", let's take a pass at keeping down. For: * Requirement that gold be removed from components, pads, etc. is J-STD-001C, 5.4.1 * Context of that requirement [J-STD-001C, 5.4.1] and 6 or 7 references are in IPC-HDBK-001.

Why gold plating on PCB?

Electronics Forum | Fri Feb 28 01:36:43 EST 2020 | crystal12

&gt; What is the use of gold plated boards? <BR> <BR> With the increasing integration of IC, the more IC the more dense. The vertical tin spray process is difficult to flatten the pads, which brings difficulty to the SMT mounting, and

Re: Soldering to Gold

Electronics Forum | Thu Sep 16 18:07:16 EDT 1999 | Earl Moon

| We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However, a reco

Re: Gold plated components - solderability issue

Electronics Forum | Mon Mar 30 07:41:06 EST 1998 | Earl Moon

| Hi, | We have encountered de-wetting issues with gold plated components( SMT LEDs ). | The problem comes and go and we yet to locate the root cause ( process, component or solder paste etc ). | The rest of the components on the boards are not havi

Re: Soldering to Gold

Electronics Forum | Thu Sep 16 20:55:35 EDT 1999 | Dave F

| | We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However, a re

Solderability of fired-silver/platinum/palladium lead terminations

Electronics Forum | Mon Mar 30 08:11:22 EST 1998 | Derek Drabenstadt

Does anyone have any experience with fired-silver/platinum/palladium lead terminations soldering. I have had issues on nickel over gold plated boards but not with HASL'd boards with tin/lead pads. Is this the norm?

Re: Soldering to Gold

Electronics Forum | Fri Sep 17 06:01:12 EDT 1999 | Earl Moon

| | We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However, a re

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