Products > Test Equipment

MS05000 Budget Logic Analyzer Probe Set Design

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martinr33:
For soldering those ICs - drag soldering works almost impossibly well. The key is, liquid flux. Use a water wash type, no clean if  you can find it. If you have decent soldering skills already, it is easy to get good enough quickly, meaning a bit of excess solder on the last few pins that you have to remove.

So - imagine you have a SMT SOIC with nasty, blobby solder joints and runs between the pins...

1) Paint the pins with flux, liberally.
2) Put your soldering iron tip on the end of the row. There will be some spitting and sizzling, as it slows the solder will melt.
3) Drag your iron gently and slowly across the pins. The solder will blob up and follow the iron, leaving perfect bright shiny joints behind.
4) You may have to pull excess solder off of the last few pins with wick or a solder puller.
5) If you like - do it again to get everything clean.
6) Clean your board when done.

For 0603s - I put a dot of solder on one pad, then hold the 0603 on it with tweezers, then melt the solder (liquid flux again). Then, I can solder the other end.


Did I mention LIQUID FLUX enough? water wash, not rosin. 
 

NoisyBoy:
My order from DigiKey likely won’t arrive until end of the month.  But for soldering SMTs, Dave’s video is excellent for newbies, https://youtu.be/b9FC9fAlfQE, it allows you to see martinr33’s recommendations in action.

This is the no clean flux pen I use, refillable for those of us who prefer green products.  Works well for SMT soldering.

SRA #312 Soldering Flux Pen Low-Solids, No-Clean 10ml - Refillable https://www.amazon.com/dp/B008OC0E5M/ref=cm_sw_r_cp_tai_RnHREbW2DH3R4

Bog1:
I really like what you've done here! Would you be willing to attach the layout so I can order a set of PCBs from JLC?
I'm based in Germany if you want to rather sell them yourself :)

Gandalf_Sr:
I'd rather not, I imagine that the design would quickly appear on Aliexpress if I posted the Gerbers. I still have spare PCBs, if you want some PM me.

NoisyBoy:
For those who hasn't bought the components from DigiKeys yet, I just got an update today that the ship date for the complete order has been further delayed to 6/17 (I placed the order two weeks ago).  So please plan accordingly.

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