Yes that is what it does. It will always crust over and have a matte almost corroded look to it. I've been working with the stuff for a few years now and there are all sorts of fun issues that you run into with the hotter solder profiles and making the plastics on your connectors brittle and what not.
All of our products have to pass 50 6 foot drops at multiple angles and especially with BGA parts and this new solder that can be a fun one to figure out. But no where near as fun as ensuring that all of our products can take 25KV air discharge with out even so much as a reboot. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charles Harpole Sent: Monday, February 18, 2008 2:10 PM To: Oliver Johns; [EMAIL PROTECTED] Cc: [email protected] Subject: [Elecraft] new solder I have some of the new solder with the non-toxic flux and no lead. I get what looks like cold joints regardless of the heat applied.... many tries, same result. Anyone else get the same? 73Charles [EMAIL PROTECTED] > From: [EMAIL PROTECTED]> Subject: Re: [Elecraft] K1 toroid winding> Date: Mon, 18 Feb 2008 13:54:28 -0800> To: [EMAIL PROTECTED]> CC: [email protected]> > Dear Bud,> > Winding the toroids is easy. Tinning the leads is hard, unless you > have a solder pot or some such. That's where the Toroid Guy > <[EMAIL PROTECTED]> shines. His are beautifully tinned. Saves > you from potential bad solders onto the boards.> > Oliver Johns> W6ODJ> > > On 18 Feb 2008, at 12:38 AM, Dave Andrus wrote:> > > Bud:> >> > I've seen the advice, and it's all excellent, but for someone new > > to the art, it might still sound just a bit intimidating ("remember > > to do this, don't forget to do that"), so I'll offer my 2 cents > > just to try and make it a bit worse!> >> > Remember that it's only mysterious until you've actually wound your > > first toroid. After that, it's all mostly downhill (with the wind > > at your back, usually)!> >> > Remember that you're going to get a (typically) excellent manual > > from Elecraft that goes out of its way to show you pictures and > > give lots of good advice when you need it--at the moment you're > > winding the first toroid. I've done lots and lots of toroids, and > > I still was impressed with the graphics, winding instructions and > > lead dressing advice that's in the manual. So, don't be afraid to > > try--they're really not hard at all, just new to someone that's > > never done one before. In fact, one could say that they're no > > harder than winding any inductor, and in some ways quite a bit easier.> >> > If you try your first one, and you're still not sure if it's right, > > take a quickie digital picture of your finished toroid, and email > > it to either Elecraft's great tech support folks or here on the > > reflector (just don't send big attachements if you can avoid it). > > Then ask, "Hey, how does this one look?" Guaranteed you'll have > > lots of seasoned eyes looking over your shoulder.> >> > Don't be afraid to try. Oh, and did I forget to mention that I > > ordered my recent K2 toroid set from Mychael, the coil guy!? He's > > quick (had them in 3 days from across the country), not too > > expensive, and his toroids look great. Hey, I already know how to > > wind 'em. Don't need more practice ;-)> >> > It cut a couple of hours off of my build time.> >> > 73,> >> > Dave K7DAA> >> > http://www.k7daa.com> >> > On Feb 17, 2008, at 4:37 PM, John R. Lonigro wrote:> >> >> Bud:> >> Here's a little tip (I'll leave the poetry to Wayne): The first > >> winding tends to be the loosest, so wind N + 1 turns and then > >> remove the first one, ending up with the correct number. But make > >> sure you double check the number of turns. Being off by "only" 1 > >> turn may not sound bad, but in many cases it represents a big > >> increase in inductance, possibly over 10%. As others have said, > >> just count the number of times the wire passes through the center > >> of the toroid.> >>> >> I've easily wound well over 100 toroids in the past few years and > >> have never had a problem with winding them. Be especially careful > >> stripping the wire before soldering it into the circuit. You can > >> search the archives for various techniques. One thing I do in > >> that regard is insert the part BEFORE stripping the wire, to check > >> for proper fit. Then I trim it, leaving maybe 1/8" extra on each > >> lead. Finally I remove it and concentrate on stripping the wire > >> where I know it's going to be contacting the solder pad. If you > >> don't trim it first, you'll end up spending lots of time stripping > >> parts of the wire that will either be snipped off after soldering > >> or will be nowhere near the solder pad.> >>> >> 73's and good luck,> >>> >> John AA0VE> >> [EMAIL PROTECTED] wrote:> >>> I just ordered a K1 four band transceiver.> >>> I am worried about the torroids .... should I be?> >>>> >>> Bud> >>>> >> _______________________________________________> >> Elecraft mailing list> >> Post to: [email protected]> >> You must be a subscriber to post to the list.> >> Subscriber Info (Addr. Change, sub, unsub etc.):> >> http://mailman.qth.net/mailman/listinfo/elecraft> >> Help: http://mailman.qth.net/subscribers.htm> >> Elecraft web page: http://www.elecraft.com> >> > _______________________________________________> > Elecraft mailing list> > Post to: [email protected]> > You must be a subscriber to post to the list.> > Subscriber Info (Addr. Change, sub, unsub etc.):> > http://mailman.qth.net/mailman/listinfo/elecraft> > Help: http://mailman.qth.net/subscribers.htm> > Elecraft web page: http://www.elecraft.com> >> > _______________________________________________> Elecraft mailing list> Post to: [email protected]> You must be a subscriber to post to the list.> Subscriber Info (Addr. Change, sub, unsub etc.):> http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm> Elecraft web page: http://www.elecraft.com_______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
