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english solder

Discussion in 'Electronic Repair' started by Peter Lener, Dec 29, 2005.

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  1. Peter  Lener

    Peter Lener Guest

    sometime in my remote past i had solder i believe that came from england--it
    had 5 tubes of flux in the very thin solder--i believe the name was edwin or
    erwin or something that started with e

    any help is appreciated--trying to buy some from them
     
  2. ml

    ml Guest

    You probably mean Ersin Multicore solder. There is some on eBay, says
    on the label that there are factories in USA UK Canada and Malaysia
     
  3. James Sweet

    James Sweet Guest

    Count me in, I despise lead-free solder, it just doesn't work worth a
    crap compared to the standard stuff. Joints tend to be cloudy and blobby
    and it's hard to make it flow well. Guess I better stock up.
     
  4. Arfa Daily

    Arfa Daily Guest

    Absolutely, James. I have written whole pieces in magazines about the
    hateful stuff. Soldering on printed circuit boards was, until a couple of
    years ago, a tried, tested, reliable and mature technology. Bad joints,
    except in the ' traditional ' places, had become a rarity. Now, I see more
    and more, often on huge surface mount ICs, where you would never have seen
    them before. There are also issues with mixing leaded and lead free solders.
    Most of the current wisdom states that a joint with mixed composition, is
    potentially more unreliable, than either type on its own. I think that it is
    absolute madness to make it law such that a board originally fabricated
    using leaded technology, has to be repaired using unleaded, after June this
    coming year.

    I currently have an issue with a device that I use many hundreds of in the
    course of doing a modification to a particular industrial board that I see
    hundreds of a year. Over here in the UK, none of the suppliers who deal with
    this component, can supply me in the numbers I require, unless I am prepared
    to commit to them ordering in a year's supply for me. For a little guy like
    me, who is at the mercy of the whims of the company that I do this work for,
    this is not an option. So I found a company in the US who can supply me with
    as many as I need, when I need them and, even allowing for exchange rates,
    shipping and import tax, can still supply me them for 2/3 what I have to pay
    here. It has worked great for the last year. Now, on enquiring, it seems
    that in the US, the lead free version of this component, is not going to be
    offered so, lead free rears its ugly head again, and shafts me on this very
    good business.

    I wouldn't mind so much if someone could demonstrate to me the need for the
    change. Apparently, over 80% of the world's mined lead, goes to automotive
    battery manufacture. This has been exempted because there is " no viable
    alternative to this technology ". Instead, vigourous recycling mandates have
    been put in place. Fair enough. However, only 2% of mined lead finds its way
    into solder, and again, new recycling mandates for end of life electronic
    equipment, have been put in place throughout ( supposedly ) the whole EU.
    I'm pretty sure that millions of people are not being lead poisoned as a
    result of there being leaded solder in the electronics that they interact
    with, and if the stuff is going to be properly recycled at the end of the
    equipment life, JUST WHAT IS THE ISSUE ???

    I would say just how long is it going to be before 400 people get killed
    through a 747 falling out of the sky as a result of bad joints, or how long
    before people start dying in hospitals ( " Charge to 300 - CLEAR !! "
    click... fizzz ... " Oh SH** - someone bang the side quick ! " ) but
    interestingly, as a result of strong lobbying, the avionics and medical
    instrument industries, seem to have succeeded in securing at least temporary
    exemptions. Now ask yourselves, what exactly does this tell us about lead
    free soldering ... ??

    Perhaps we should start ' CALFS ' - C ampaign A gainst L ead F ree S older

    I would be interested in hearing other peoples experiences and thoughts on
    this subject, anywhere in the world, and particularly anyone directly
    involved at production or bulk maintenance levels. Feel free to mail me
    direct if you would prefer not to be ' public ' on the group.

    Arfa
     
  5. gb

    gb Guest

    Multicore Solder is know owned by Loctite - A Henkel company
    http://www.multicore.com/

    Select you part of world, for distributors and suppliers.
    Newark / MCM / Farnell / InOne companies are distributor of Multicore
    solders.

    Right in the Farnell (UK) on-line catalog
    MultiCore 63/37 alloy (eutectic mix) - 1 lb roll

    0.56 mm outside diameter - 1001713
    http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=1001713&N=0

    0.61 mm outside diameter - 1001714
    http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=1001714&N=0

    BTW, there will always be Tin / Lead solder available. Yes, Lead free is
    being used in new fabrication -- BUT conventional tin-lead materials
    (components) are NOT compatible with the new lead-free device finishes.
    As part of the global transition to lead-free, component manufacturers are
    switching to lead-free finishes -- BUT this takes time and inventories are
    very large for some components.

    Pure Tin and Tin/Lead alloy solders are used in other industries that do not
    have these restrictions .. such as the stained glass industry, auto body,
    restoration work, etc.

    gb
     
  6. Wes.

    Wes. Guest

    Our factory is moving to be RoHS compliant by the EU deadline of April.
    From my reading of the directive you can still use lead solder and non-
    RoHS parts for maintaining equipment sold before 1 April 2006 but not for
    equipment after that date, even if same model.

    I'm looking at using AIM's CASTIN as our Pb free solder, looks to have
    the best properties for use in current type of soldering equipment we
    use. I'm recommending keeping separate facilities for Pb and Pb free work
    / rework to prevent cross contamination.

    Wes.
     
  7. ilaboo

    ilaboo Guest

    thanks

    peter
     
  8. jakdedert

    jakdedert Guest

    One place where lead-free has made a welcome appearance is in plumbing.
    I'm an occasional handy-man, so when I bought a house a few years back
    which had really BAD piping in the basement, I resolved to replace all
    the crappy, mismatched and kludged up mess with new copper.

    I was surprised to find out that all the supplies available were
    lead-free (I suppose I shouldn't have been, but the last time I had
    sweated any copper pipes was in the 70's). The old acid based flux
    seemed different as well.

    I determined to undertake this task with some trepidation; but to my
    gratification, all went very well. The new stuff works just fine, and I
    didn't have to worry about miniscule amounts of lead leaching into my
    drinking water.

    Considering what supposedly happened to the Romans, I guess it's not all
    bad....

    jak
     
  9. ml

    ml Guest


    Isn't copper more poisonous? If you drop a lump of copper in your
    aquarium the fish die. A lump of lead has no effect. To kill a tree
    you hammer copper nails into it.

    The nice hard water forms insoluble lead salts coating the inside of
    the pipe. I'm sure the copper salts are soluble, and end up in your
    tea!
     
  10. jakdedert

    jakdedert Guest

    Interesting. As I said, I'm only a part-time handyman...and most
    certainly not a chemist or biologist.

    I'll let someone with more background answer this one.

    FWIW, copper is mandated for supply lines (from the meter to the house)
    in my municipality.

    jak
     
  11. In the UK it's plastic. Which replaced lead. ;-) But copper is still
    common inside houses - although push fit plastic is a popular DIY option.
     
  12. jakdedert

    jakdedert Guest

    We use some plastic (United States) as well; but from an casual
    ecologist's viewpoint, I'd sooner trust the copper as far as long-term
    exposure is concerned.

    There's a lot of press out there concerning compounds in various kinds
    of plastics mimicking naturally occuring hormones, thus causing all
    sorts of genetic abnormalities in nature.

    jak
     
  13. Arfa Daily

    Arfa Daily Guest

    Wes

    I am very interested in your reply. Please could you contact me direct, as
    there's a couple of points that I would value your input on.

    Many thanks

    Arfa
     
  14. ml

    ml Guest


    Organic compounds go straight through plastic pipes, so if you spill
    petrol, or diesel on your drive, and the pipe is underneath, expect
    your chances of not getting cancer to decrease.

    Our habit of building new houses on old factory sites, (where did they
    tip those heavy metal wastes/pickling acids etc?) worries me a bit
    too.

    Luckily, the Alzheimers from all the aluminium drinks cans, and those
    battered jugs we kept the water in at school dinners means I soon
    forget about
     
  15. I'm also a believer in copper. And actually enjoy plumbing.
    Given the amount of plastic packaging used for food and drink this is a
    bit of a worry...
     
  16. Including barrier types?
     
  17. James Sweet

    James Sweet Guest


    For a while we were allowed to use PVC for water plumbing, but after
    many failures it was banned for use with pressurized water.
     
  18. IIRC, the stuff used in the UK from street to house is polyethylene.
     
  19. James Sweet

    James Sweet Guest


    I believe the stuff we have buried outside to the houses is still some
    sort of plastic, it's probably the same stuff as over there. Inside the
    house it's all copper in most houses though, that's my favorite type of
    plumbing to work with.
     
  20. jakdedert

    jakdedert Guest

    Roto=rooter replaced the line (galvanized iron) between two buildings on
    my property with PVC. It worked fine for the five years we owned it.
    However when the main from the street ruptured, I researched local codes
    and replaced with hard-drawn copper...the only legally acceptable choice
    here in Nashville. I believe the local codes are simply a rubber-stamp
    of the National codes.

    I did all the excavation and had licensed plumbers come out and make the
    connections...also legally required.

    jak
     
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