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Running with sn100c in my solder pot!

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#42032

Running with sn100c in my solder pot! | 8 June, 2006

On Saturday the 3rd, I offloaded nearly 1200 pounds of solder from my Electrovert, did the tin purge and loaded nearly 1200 pounds of sn100c back into my solder pot. It was a hell of a job, but we got it done in 8 hours. We've been running with this alloy for four days now and I'll just have to admit that it rocks! Here's why. I'm running the pot temp at 490F about 10F over where I was and I havent changed the base profiles much on our circuit boards. This stuff drosses very little and I haven't added any solder since monday. All in all I am very pleased with its performance. Additionally we are running damn close to no solder bridging on our assemblies. Just thought I'de share the good news. Jay

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#42036

Running with sn100c in my solder pot! | 8 June, 2006

Hi,

That's good news, and we did outs with SN100C as well on Wed, however we are still working hard on getting a good profile.

We have some large BNC connectors, and they are hard to profile. We also have wave palettes, and these might be too thick, and causing variability, due to the temperature of them when they are loaded.

We are working on it now, and I am glad yours is working well!

Regards,

Grant

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#42043

Running with sn100c in my solder pot! | 9 June, 2006

hi, gald to hear that yr process is working well.....we are in the process of buying a wave with SN100C solder.....any pitfalls/precautions that you took during the transition?

did you do any DOE for setting up the profile values??

are you seeing any hot tears (microcracks, especially in the bottom side fillets

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#42055

Running with sn100c in my solder pot! | 9 June, 2006

Howdy Amol, As far as I can see, there aren't too many pitfalls with SN100C. Just make sure to keep all of your alloys seperated. The issues that I am working out right now is the profiles with our wave pallets and some of our larger components. We are using Kester 920CFX flux, this is an older alcohol based flux and has worked well for us. My solder pot is at 490F so that is only 10F over where we were with Lead. Regarding wave solder plallets, we've seen that SN100C seems to have a different surface tension and doesn't flow into some of the pockets as well. We're sitting down now and determining how we need to modify our pallets and or circuit boards to deal with this. Encouraging though is the fact that I am getting near defect free assemblies across my wave. As far as profile values that is dependent on our flux, pretty much the same profiles, a little tweak here and there, but I did the measurements and did the math to get a really nice delt across both pre heats and my wave. I'm happy with the results. I'm not seeing any microcracks or hot tearing on our boards, We're using an FR4 tg170 circuit board with an ENIG finish and this is proving to be a geat combo all around for our assemblies. Best regards, Jay Brower

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#42091

Running with sn100c in my solder pot! | 12 June, 2006

thanks Jay,

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#42401

Running with sn100c in my solder pot! | 23 June, 2006

Glad to hear it is running good for you. I have my new wave solder machine in house.(hooking it up next week). I am debating between Sn100 and Cobalt 995 (metallic resources). Does anybody have an experience with the Cobalt. Or a reason not to go with it?

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Rob

#42403

Running with sn100c in my solder pot! | 23 June, 2006

Hi Paul,

Can't find any info on Cobalt 995,but we do have experience of 99/0.7/0.3 +0.02% Cobalt wire - flows better than any leadfree wire we've come across & the cobalt is supposed to improve tip life. Bit smokey though, but with extraction that's not really a problem.

I'm guessing the cobalt is working to stop the tin corrosion as in the SN100C - Nickel & Cobalt are right next to each other on the table, but I'm willing to be proved wrong.

Let me know how you get on, or if you find out any further info.

Cheers,

Rob.

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#42419

Running with sn100c in my solder pot! | 26 June, 2006

Jay----

Please contact me if you are interested in the new alloy that my firm, WCS, inc. has invented. Bahodim (TM) solder is successfully being used by a startup in Florida, Initech, inc.

Bahodium has out-performed SAC, Tin-Lead and SN100 in reliability testing. Please contact me for more info.

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RDR

#42421

Running with sn100c in my solder pot! | 26 June, 2006

I contacted you about this stuff, where is the info?

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#42425

Running with sn100c in my solder pot! | 26 June, 2006

I also sent him an e-mail a week ago and have not received an answer.

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#42431

Running with sn100c in my solder pot! | 26 June, 2006

Look here you dime store cowboy. Why in the heck would I ever contact you. You've done nothing, nor have you even proven that you are legit. Stop wasting bits on this forumn and either pony up with some useful information or go away. Jay

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#42435

Running with sn100c in my solder pot! | 27 June, 2006

Hi,

How come so many good threads get off track because of this Guru fool.

To get back on track, we have been running SN100C in our pot for a few weeks now, and it's incredible, and working really well. Glad I listened to the advise of people on the forum here and went for it, as it's been a good choice. Nice shiny appearance, and flows well.

Some SN100C solder paste would be nice to try, and has anyone found any and had some experience using it?

Regards,

Grant

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cuculi54986@yahoo.com

#42439

Running with sn100c in my solder pot! | 27 June, 2006

I tried some SN100C from AIM... On only one array. It flowed well on the chips but did not like the finish on the SOT23's on the board. I did not have enough arrays to mess around, so we switched it over to SAC305 and had no issues. I'm guessing with some oven recipe adjustment it would have wetted well.

In the very near future we'll be running some boards using a SnCuCo paste. I haven't seen anything in the forums about SnCuCo, but it's properties are very similar to SN100C (SnCuNi).

We're running SnCuCo in our Pb-free wave and our Wave Master Chris is very happy with it.

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aj

#42443

Running with sn100c in my solder pot! | 27 June, 2006

How does SN100C perform using Selective Pallets?

We switched over to SACX about 5 weeks ago and the results are brilliant.

We are getting better results than before believe it or not.

Also dross foramtion is a lot less.

aj...

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PWH

#42447

Running with sn100c in my solder pot! | 27 June, 2006

Isn't Initech, Inc from the movie "Office Space"? I think that gets a "TM", not Bahodim. Not a start-up company, either. That movie has been around a few years.

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RDR

#42448

Running with sn100c in my solder pot! | 27 June, 2006

Aj, Did you switch from SN100C to the SACX?

Russ

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aj

#42449

Running with sn100c in my solder pot! | 27 June, 2006

No.

We went straight from Lead Alloy to SACX.

aj...

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#42456

Running with sn100c in my solder pot! | 27 June, 2006

Hi,

Do you mean selective palettes in the wave? We are running those, and it makes the process window tight, but once we got there, it's great. Pre heating the board was a bit difficult, but we got it right, and went for a water based flux. Not sure if that's the right thing to do, but it's working right now.

Grant

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#42526

Running with sn100c in my solder pot! | 30 June, 2006

Grant, Haven't doen any work with the SN100C paste, the problem I guess is yoru subject to the suppliers flux base so if that is poor then the alloy may not perform as well as it could. We've found Avantec to be pretty good at SMT but have got SN100C at wave and found it to be very good although have seen some problems with the solder staying on the base of the pallets in a webbing form, we thought flux was the issue so testing out other fluxes, what are people using? I have also tried and loved the SN100C wire provided by Nehon, it beat the other 7 wires we tested hands down and solders 97% of stuff at the same temps as our leaded wire. J

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