Full Site - : copper leaching (Page 5 of 6)

Re: DI Water Cleaning / Need To Control Resitivity More? / Which water?

Electronics Forum | Tue Sep 01 17:18:25 EDT 1998 | Dave F

| | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, carbon bed, mixed resin bed

Re: Hey Ya'll, let's talk about Lead fer' a bit...

Electronics Forum | Wed May 05 03:57:00 EDT 1999 | Bernard Mulcahy

| Hi Ya' John! | | Here's my comeback to the points you've raised...you knew I would have a comeback, didn't ya'? | | |Steve, | | | | I see your point, and yes there are alot bigger fish to fry in |the removal or control of lead in the environment

Time for the green flag to come down?

Electronics Forum | Fri Sep 22 16:21:31 EDT 2006 | patrickbruneel

Figure 1. Human Toxicity Potential, Life-cycle Comparison Tin/lead solder paste is the top formula. SAC is second from the bottom.3 RoHS Report Excludes Comparisons By George A. Riley, contributing editor A European Union (EU) Commission for Envir

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,

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

Re: Detecting lifted leads on QFPs

Electronics Forum | Fri May 28 16:30:39 EDT 1999 | JohnW

| Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. | | Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect

Re: DI Water Cleaning / Need To Control Resitivity More? / Which water?

Electronics Forum | Wed Sep 02 07:16:20 EDT 1998 | Earl Moon

| | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, carbon bed, mixed resin

Wadda Ya Mean Wadders Different?

Electronics Forum | Wed Sep 02 16:05:20 EDT 1998 | Dave F

| | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, carbon bed, mixed r

Re: Wadda Ya Mean Wadders Different?

Electronics Forum | Wed Sep 02 16:50:49 EDT 1998 | Earl Moon

| | | | | We�ve been thinking again and need your help in sorting through an issue related to deionized (DI) water cleaning of assembled boards. | | | | | THE BACKGROUND: The water reclaiming systems goes: gross filter, fine filter, carbon bed, mix


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