Creative Commons images are CC BY-NC-SA 3.0

$ 16.95

Notify Me

added to your
shopping cart

quantity
Out of stock out of stock
16.95 1+ units
15.26 10+ units
13.56 100+ units

We have a purchase for 275 units. We expect some of these to arrive next on Apr 15, 2015.

Incoming stock values are estimates, and subject to change without warning.

Description: This is 50g of high quality, Lead-Free Solder Paste, the perfect amount to keep around for prototyping and hobby projects that require a bit of SMD soldering. Solder Paste Stenciling is the easiest and quickest way to solder some of the trickier SMD components. Here at SparkFun, we use solder paste stenciling on pretty much all of our boards. It saves us a lot of time. But stenciling takes more than just a stencil and a dream… you’re going to need some paste.

The composition of this paste is Sn: 96.5%, Ag: 3%, Cu: .5%

Note: Although this Solder Paste comes in 100g containers, it contains 50g of paste. The container is not intended to be full.

Documents:

Recommended Products

Customer Comments

  • how many days it can stay without refrigeration ?

  • Production date? Production date is very important as components inside the paste wear-off after 6 months of PRODUCTION date (yes, not case opening date).

    • I’m not sure this is something we can easily post and keep accurate. We are being intentional about how much we keep in stock so it doesn’t sit too long. If you are looking to buy and need the exact date email techsupport@sparkfun.com and they should be able to check for you.

      • Also, are these kept refrigerated in your warehouse? and at what temperature? you can extend the shelf life of this stuff for up to a year if refrigerated, but you have to be careful not to freeze it. That separates some of the components and usually ruins it. (ever had yogurt after it’s been frozen and thawed? No amount of stirring can get it to mix and “taste right” again)

        • Checking with our recent stock (it’s December currently), the manufacture date indicates that this shipment was manufactured sometime last month. The solder paste is currently stored at room temperature (so around 68-73 °F) with the rest of the stock at SparkFun.

  • Someone asked this in the YouTube comments, but I’d like to ask it here as well. How much time do you have between applying the solder paste and placing components? Could I apply paste to say 100 boards, and then populate them all, or would the paste dry out before I got to board number 10?

    • This is only anecdotal evidence, but I have left paste for a few hours before reflow. I remember a production shop mentioning they give their paste an 8 hour shelf life on the board. YMMV

  • ChipQuik also makes a low-melt temp version of this, right? Any plans to carry that in this size? Or are there downsides to the low temp version? (Trying to reduce my chances of melting the board and components on my hot plate.)

  • I should mention keeping it in a cool place in an insulated bag does okay as well. I do that since I don’t want to power another refrigerator. The peltier small coolers don’t work very well for cooling a plastic container.

  • Probably not a good idea to keep it in the same refrigerator as your food.

    • As long as it is in a sealed container so it is isolated from foodstuff, it should be fine. Most of the dangerous byproducts of solder paste are released into the air during reflow.

      • Thanks, I have been considering that. But is there issues with flux evaporating? Even sealed containers can allow gases to seep through.

        I feel a little better since its lead free. Nice to see SFE finally has lead free stuff. Now I can get smaller quantities.

  • No refrigeration required?

Customer Reviews

5 out of 5

Based on 1 ratings:

5 star
1
4 star
0
3 star
0
2 star
0
1 star
0

Solution to all the problems I didn't know I had.

I’ve been prototyping my own PCBs for nearly a decade now. Lately I’ve been getting all bent out of shape as components get smaller and smaller, but I can’t figure out how to use them because the packages hide the pins (QFN, BGA, MLP, MicroFET..).

I’d spent a lot of time making footprints larger than the packages so that I could solder one pin, and then wick the rest. But this was a mess, and often didn’t work on the first try (which means it only gets worse from there).

And then I got a stencil and tried this stuff. It’s just completely magical. You smear it all over the design the table top and maybe some on the dog, but when you apply heat the surface tension just draws it back onto the pads (as long as you don’t have too much it works fantastic).

I watched the video, and bought a little $15 hot plate. That works great but I’m not sure I needed it. I’ve also tried the hot-air-gun approach and I actually like it better because it offers a bit more control. The hot plate has a lot of thermal capacitance that gets carried away, and makes things a little more complicated to control. The paste is tacky enough that parts don’t just blow all over the place if you’re conservative with the airflow. Also the hot air gun seems to make more sense for 2 sided designs (which is sort of a necessity with two layer boards)

50g seems like it should last a lifetime, but we’ll see how long it keeps in the fridge.

Anyhow, Good job sparkfun: you rock. Making my life easier, keep it up. I like that.

PS The dog was meant to be hyperbole. Don’t do that.