Electronics Forum: how to prevent solder leach (Page 2 of 3)

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

Paste sticks to squeegee

Electronics Forum | Mon Jun 27 11:06:20 EDT 2005 | geb

Do you know why my solder paste sticks to the squeegee so much that it mis-prints and how can I prevent it from happening. I can only get about 3/4 prints before this happens.

Re: Soldering to Gold

Electronics Forum | Fri Sep 17 03:55:45 EDT 1999 | Brian

| 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: Soldering to Gold

Electronics Forum | Fri Sep 17 15:01:05 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

Ag Saturation in SAC solder Paste

Electronics Forum | Thu Dec 16 16:28:51 EST 2004 | Indy

Hi, We are using Sn/3.0Ag/0.5Cu solder paste on Pd/Ag pad metallization in one of our application. Could someone provide me information on the following: 1. How bad is the Leaching of Ag in SAC alloy and how it can be mitigated. 2. During reflow so

Re: Soldering to Gold

Electronics Forum | Fri Sep 17 09:54:40 EDT 1999 | Brian

| | | 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: Soldering to Gold

Electronics Forum | Fri Sep 17 10:09:17 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,

Saponifier needed to stop

Electronics Forum | Sat Oct 06 08:32:09 EDT 2001 | davef

Mr. Wizard is not currently available. You get the wizzer. Maybe your dream date will show later. Get your own lab tests done. Show your potential customer that your boards are clean. That�s the issue. The issue is not how you go about cleaning

External Factors to be controlled during assembly

Electronics Forum | Thu Sep 27 19:52:28 EDT 2001 | davef

All of the discussion of "environmental controls" are a matter of degree, dependent on the requirements of the product that you manufacture. For example: shops assembling under-the-hood products have different requirements than shops making garage d

can silver plating be used as barrier when soldering brass to copper? silver plate the brass?

Electronics Forum | Thu Jun 08 07:56:34 EDT 2017 | jkitt84

In an excellent previous thread davef mentions brass should be plated prior to soldering to prevent zinc leaching from the brass. It is reported once the zinc leaches, the joint is weak. He recommends copper or nickel plating. Would silver plating w


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