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Re: RoHS question


 

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RoHS doesn’t bother a lot of people, even if you’re repairing old gear where the tracks fall off if you look at them funny you’re still allowed to use leaded solder.? They’re full of lead and god only know what so redoing a couple of joints in lead-free isn’t going to save too many whales.

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It’s not all that complicated, just mainly nit-picking pedantic pen-pushing stuff.? I work in IT dealing with money, so I’m used to that sort of thing.

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If you making laptops or whatever you get a statement from whom you buy solder, PCB, wire etc from that says how much lead is in it.? You staple all those together and send it off to the EU and say “our laptops are made from this” and everyone is happy.? Of course this means you can’t buy the cheapest solder from Honest Johns Alibaba shop and things are a bit more difficult if you actually make solder, but that’s not most of us.

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Tony

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From: [email protected] <[email protected]> On Behalf Of Dave
Sent: Wednesday, 28 October 2020 4:12 AM
To: [email protected]
Subject: Re: [homebrewpcbs] RoHS question

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Tony,

? Looks complicated but as Jim said I (we) shouldn't even worry about it as hobbyists.

Dave

On 10/27/2020 5:08 AM, Tony Smith wrote:

Ah yes, I did mean I still use the leaded stuff, maybe I should stop chewing it.

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And at least in Australian, you can buy it easily enough and it’s $10/roll cheaper than lead-free, so yay for us I guess.

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As far as RoHS, Wikipedia has a reasonable write-up: .? Huh, there’s 10 things on the list now.

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Weighing by individual materials eliminates cheating.? Say your cable is a metre long, weighs 1000 grams and the solder joints have 2 grams of lead, at 0.2% it’s double the limit.? No problems, just make the cable twice as long.? You still have the same amount of leaded solder but now 2 grams of lead in a 2000 gram cable is 0.1%, so it passes!? Everyone happy!

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Under RoHs both cables have 40% lead in the solder, so you need to sort that out.

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They don’t make the limit 0% because easier said than done, plus a tiny little bit of lead in steel & brass makes it easier to machine.

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Tony

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From: [email protected] <[email protected]> On Behalf Of Roy via groups.io
Sent: Tuesday, 27 October 2020 1:06 PM
To: [email protected]
Subject: Re: [homebrewpcbs] RoHS question

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I think you meant to type, "leaded" instead of, "lead free" - your 2nd link is to classic 60-40 Sn-Pb solder. Some of the early Pb free solders were genuinely unpleasant to work with, enough so that whoever did the plumbing in my house chose to silver braze everything instead of using whatever Pb free soft solder was available locally.

Roy

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