I had an envelope full of SMD diodes arrive today. Three different types in three different sizes, so nine bundles. Unlabeled!
I’m not sure what they were thinking at the shop. I got them from here.
I managed to figure out that the ones marked ‘S4’ were the Schottky diodes (1N5819WS). I think the ones labeled ‘T4’ are the switching diodes (1N4148WS) and the ones labeled ‘T7’ and ‘A7’ are the rectifying diodes (1N4007), but I’m not sure of that yet.
They are exactly the same product so if you’re planning to purchase might as well get the cheapest option. Note that the first link above also has a separate more expensive option which is actually a different product, I didn’t get one of those.
In addition to unboxing these third hands I also add some 4mm heat shrink to the alligator clips to take the bite out of the teeth.
Note: in this video I have the annoying habit of calling “heat shrink”, “shrink wrap”. The correct term is heat shrink, shrink wrap is a different type of thing.
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I’m gonna keep this in my booth where it will be used. Don’t want to use it anywhere near where I keep my UV solder mask because I don’t want to accidentally cure it!
It would have been more convenient for me if the 0.07mm wire had have been on a smaller roll like the other two, but we can’t have everything. I’ve been thinking I might get some sort of wire rack, but I’m not sure where I would keep it.
I wasn’t sure exactly how I would go about cleaning enamel off the wire for soldering, so I asked ChatGPT, which gave me a number of options:
Mechanical stripping
Thermal stripping
Chemical stripping
I think what I will actually try is just tinning the ends with my soldering iron and some fresh solder and see if that will burn off just a little bit of enamel on the tips, leaving me with a tinned wire I can easily solder into place.
I found a good video that shows how to crimp a JST PHD connector: JST Connector Crimping. When crimping these JST connectors I use my ENGINEER PA-09 crimping tool. I use a 1.4mm crimp for the wire and a 1.9mm crimp for the insulation.
