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1 vote

Beginner soldering help - solder balls/doesn't liquefy and soldering tips blacken

You should not sink the tip into the flux. Not ever. The flux or rosin is to get rid of any oxides, and clean the surfaces to solder. It also reduces the surface tension of the solder, making sure ...
StanS's user avatar
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1 vote
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Wiring USB-C connector to micro-USB

You have bought a wrong Type-C plug, a host-simulating plug intended for plugging it into a device, signaling to a device that it can draw the default amount of current. But what you want to do needs ...
Justme's user avatar
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1 vote

Wiring USB-C connector to micro-USB

What you are building is a cable assembly fully defined in the Type-C spec. See paragraph 3.5.7 USB Type-C to USB 2.0 Micro-B Cable Assembly on page 84. Aside from connecting VBus, Ground D+ and D- ...
Nipo's user avatar
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3 votes

Beginner: Solder won’t flow onto thermostat tabs

These are called Spade connectors, and you might try any auto parts place as they are used extensively on cars. That is what is on the other terminal of the thermostat, although that has a long heat-...
Paul_Pedant's user avatar
9 votes

Beginner: Solder won’t flow onto thermostat tabs

As others have mentioned in comments, the metal is probably not easy to solder to. It could be stainless steel which needs special flux (acid flux - which is a no-no for wires as the flux will go up ...
qrk's user avatar
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2 votes
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What features to look for when buying a microscope?

Presumably you have tried a microscope at university or work or something. If you like it, get that exact one. If you can't afford it, look at the specs and try to find a comparable but cheaper model. ...
Drew's user avatar
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0 votes
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I'm trying to connect an AS3933 chip to a CAS143-47

LF1P of AS3933 jointly wired to pins 2 and 3 of CAS. LF2P of AS3933 jointly wired to pins 8 and 7 of CAS. LF3P of AS3933 jointly wired to pins 6 and 5 of CAS. Wiring both ends of the antenna coils to ...
Attie's user avatar
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2 votes
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Solder is getting 'pasty' when heated

Likely it is bad quality solder. It's very common that poor quality brands tamper with the tin/lead ratio so that it's more like 50/50. Only buy solder from reputable sources. Rosin core no-clean flux ...
Lundin's user avatar
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1 vote

Will my stuff be "leaded" when soldering?

Skin contact is irrelevant for the toxicity of lead. That is because the lump metal itself doesn't have enough surface area to reach a toxic exposition dose. What you have to avoid is inhaling lead ...
Janka's user avatar
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0 votes

Solder is getting 'pasty' when heated

If the solder is from a Chinese company and it forms a sludge when "melted", it is likely counterfeit. Tin is significantly more expensive than lead -- 15 to 20 times more expensive. Fake 60/...
Math Keeps Me Busy's user avatar
1 vote

Solder is getting 'pasty' when heated

I've run across this exact issue. I had some old radioshack rosin core 60/40 solder I used for many years and worked great. Last year I ran out and got a new brand that was highly recommended on ...
Open_Hamster3337's user avatar
3 votes

Are there any techniques for soldering USB-C 16 pin?

It's very difficult to accurately apply paste on small pads with a stencil without a "paste printer" (device to do that mechanically) To solder this type of component manually, you should ...
Fredled's user avatar
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1 vote

Are there any techniques for soldering USB-C 16 pin?

Reduce the paste aperture a bit to resolve shorts The pads have a relatively large area, of which most is covered by the pins. This causes too much solder paste on the pads, which flows over and ...
jpa's user avatar
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0 votes

Are there any techniques for soldering USB-C 16 pin?

I also often find it difficult to gauge the right quantity of paste to use, and with USB connectors, it can often be particularly annoying to rework as the pins extend under the connector. What you ...
John Arg's user avatar
  • 209
2 votes

Are there any techniques for soldering USB-C 16 pin?

Looking at the datasheet, the through-hole pins are 1.20mm long. As such, they can be problematic with standard (1.6mm) PCB thickness. I'd suggest looking for a part with longer pins, or using a ...
RJR's user avatar
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2 votes

Can I solder a press-fit connector with large footprint holes?

Short answer: it's most probably ok Longer answer: Your first question has to by: why did you opt for press fit on that board in the first place? There can be different reasons and sinve you mention ...
kruemi's user avatar
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3 votes

Can I solder a press-fit connector with large footprint holes?

A 0.67mm hole was for a 0.55mm soldered round pin (it is round, right? Because a square is too large and won't fit) is actually higher precision than a normal soldered hole so I don't see foresee any ...
DKNguyen's user avatar
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2 votes

Can I solder a press-fit connector with large footprint holes?

Your options are: try it. respin the board. However, you might find that the pads are such a heat sink that you'll be unable to make a decent solder joint.
D Duck's user avatar
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