Electronics Forum: making (Page 455 of 831)

Tin Lead Solder Paste

Electronics Forum | Thu Aug 13 13:48:22 EDT 2015 | markhoch

Hi Juan, I think if you check your Solder Paste's Data Sheet, you will find that your Solder Paste can be stored at Room Temperature for up to four weeks. There is no need to put your paste back into the refrigerator after every shift. If it makes

Halogen-free Solder Re-flow Quality Issues

Electronics Forum | Tue Aug 25 07:48:41 EDT 2015 | derrikf

Both pictures are from .031" FR4. According to my MOLE it's actually staying above the liquidus temperature for close to too long. Datasheet says 90 secs, I'm in the high 80's. Not ruling it out as a possible cause, I suppose the data I'm getting c

GSM2 spindles Not seen for head

Electronics Forum | Wed Sep 30 13:09:12 EDT 2015 | ercdave1

Hello Rob, I was able to get the machine to zero, apparently replacing the circuit board on head 2 conflicted with head one even matching the jumper settings to the old board. Once I marked the head as not mounted, head 1 zeroed. I re-checked the ju

Headers and SMT

Electronics Forum | Mon Nov 02 14:45:25 EST 2015 | stevezeva

Hi there! If they are just standard headers there's a company called Teka that makes headers and socket headers with solder preforms in them. They call it "Solder Bearing Lead Technology" You can drop them in the board and reflow them just like SMT p

Seeking a "Unit Test" circuit board for testing a Pick & Place

Electronics Forum | Mon Oct 12 15:51:57 EDT 2015 | billthebuilder

I am looking to test our Pick and Place robot with a RLC circuit of various sized components and orientations. I figure this has been done before, so before making it my self I wanted to check if such a board was available. Also, if there's a circu

What's the best company for low volume, quick turn around PCB assembly?

Electronics Forum | Thu Jan 07 17:25:24 EST 2016 | hegemon

Not sure how anyone could pretend to "ballpark" a cost for a board, regardless of size, especially in small quantities. You might need 10 assemblies, but the MOQ for your main component might be 100, 200, 500, 5K pcs. Makes me laugh every time I

Reflow soldering lead onto much larger pad

Electronics Forum | Tue Dec 08 15:19:42 EST 2015 | proceng1

Apply the correct amount of paste for the pad size should work ok, as long as the part starts out in the paste. If you have a reduced aperture and the leg doesn't quite touch any paste could result in non-wetting or insufficient solder issues. I gu

Cleaning

Electronics Forum | Fri Dec 18 12:45:23 EST 2015 | deanm

Using a vapor degreaser with a solvent such as Vertrel, Novec, Techspray 1655, Solstice, etc. may work for you but solvents can attack certain plastics. Should be fine for SMT though. This is assuming you are using a no-clean (RMA) type flux, not wat

Controlling age sensitive materials on the floor

Electronics Forum | Fri Dec 18 12:25:40 EST 2015 | deanm

We are required by AS9100 to keep expired material/chemicals off the floor. Examples include solder paste, flux, adhesives, conformal coating, etc. We have a system in place to prevent such occurrences but once in a while something is not accounted f

Metcal Tip Expected Tip life STTC-837

Electronics Forum | Mon Dec 21 09:58:34 EST 2015 | dyoungquist

We are using Metcal STTC-8xx series tips. One thing that makes a huge difference on tip life is what type of solder you are using. If you are soldering with lead (SnPb) solder the tips will last 3 times longer on average than if you are soldering w


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