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Lead free is, I think, tin, bismuth, and silver (might have remembered this properly).? However, it does not play well with low temperature soldering and is (AFAIK) inferior in all respects to what

The medium carrying the solids changes viscosity as it ages and evaporates and oxidises and/or reduces); the solder balls settle as gravity exerts its ever-present force; the flux reacts with the

"> Be aware that the rated shelf life is anywhere from 6 months to a Guys, there's something I always wanted to know about that shelf life....what the heck causes the stuff to go bad? Charlie On

Lead-free solder is mostly tin, with trace metallic additives to reduce the likelihood that the solder will grow "whiskers." If interested in details on "tin whiskers," the following is a good

Hi there. We have been purchasing 63/37 solder paste from Chip Quik - both direct and via Digikey. It's available in both syringe and jar form. Be aware that the rated shelf life is anywhere from

Thanks Harvey, I bought a syringe of http://www.chipquik.com/store/product_info.php?products_id=410001 as per Stefan's post above. I have read about a foreign brand named Mechanic that most people

I use Kester 186, that's in a magic-marker style flux pen.? While I do have some solder paste, I find it of limited use unless I'm doing air reflow or oven reflow (and I don't have an oven).? For

Thanks Stefan, I will hunt some down for my smd crash course. The internet is not sending (forwarding) my posts or replies again so I logged in to see if there was any replies. I guess like usual,

I see there is now a new thermally stable type: https://www.chipquik.com/store/product_info.php?products_id=470006 I have no experience with it, but since the regular stuff keeps so well this might

Hi Dave, I use SMD291AX <http://www.chipquik.com/store/product_info.php?products_id=410001> from ChipQuick for both stencil printing and pneumatic dispenser. You can easily get it at all the usual

I have plenty of regular solder, and plenty of flux, now I need to buy some solder paste for smd stuff. Any recommendations? I would like some in a jar and also a syringe just to have both. Is

Ok, I'll use a little salt. That will be interesting when you get the website updated. No rush of course, but I will definitely take a look at it. Ok, now I understand the socket and pin

I already got a scope on order but thanks for the recommendation. :) Dave

NOTE: needs salt..... Hmmm, well, tell you what, when I redesign the website, I'll update all the PC board sections, and then give some postmortems on some of the older projects.? Then I'll start

Harvey, ? Thanks for explaining all of that to me. I guess the old say applies here too. Question: How to eat an elephant? Answer: One bite at a time. :) Where there is a will, there is a way.

Ok, doing it may be above your pay grade but the concepts won't be. Typically, any graphics display knows how to draw a dot anywhere on the screen. So you design graphics primitives, which implement

I can recommend a PZO binocular microscope if you can find one, it has multiple objectives ranging from 0.63 to 4.0 with 6.3 eyepieces, it has a very good field of view and plenty of room between the

Harvey, ? I looked up LCARS with Google and although it didn't have anything at the top from Amazon I dug further and found a few things. Even a mod for the Android to have the phone set up like

Hi John, ? I appreciate you taking the time to write this informative post, and for a first post, it is a good one. I think you may have missed my other thread where I posted the scope that I

Hi Dave,? I'm not new to this group but this will be my first post. I have been using a binocular microscope (Philip Haris BM620B) for soldering since the late 1980's, as my eyesight was (and still