Questions tagged [soldering]
Soldering is the metallurgic process used to fix electronic components to a PCB, usually with a tin alloy. Soldering can be done by hand or automatic. PTH boards were usually wave soldered, SMT uses reflow technology.
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BGA ball collapse visible in X-ray — could this be caused by electrical overstress (24 V input pads)?
I’m analyzing a BGA failure on a board and I'm trying to determine whether the damaged solder balls seen in X-ray come from thermal fatigue or from a more sudden electrical overstress (EOS) / ...
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How to solder/desolder components on a 3mm aluminum-backed PCB?
I repair industrial electronic boards that use a thick 3mm aluminum base.
This material absorbs a lot of heat, making rework difficult.
What equipment do you recommend for safely soldering and ...
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What are the limits of using wave soldering for harnesses?
I am wondering if it is possible to use wave soldering for small wire signal harness (AWG22-28) for mass-produced PCBA. I am thinking that it is possible using the right fixtures, but the fact that ...
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What is the best way to stack another switch?
I have a soft PCB with a tiny switch on top of which I want to add another switch (a mosfet).
What would be a good practice to do so? Just solder threads (hypothetical, in blue in the picture) ...
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Proper soldering with solder lug terminals
Many times I encounter components with solder lug terminals such as in this switch. And after I pass the stripped wire through the hole I apply solder and then finally heat shrink tube.
Regarding this,...
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Identify this Weller soldering tip
Inner diameter is 4.4mm.
Help me identify this 30 year old plus Weller tip as I need a smaller one for my iron. I got the station and the soldering iron from my father.
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Does a typical through-hole component lead have a strong electrical connection to internal layers?
For soldering through-holes, typically the board is subjected to "wave soldering". In this process, does the solder wick into the through-holes, so that each component leg is well connected ...
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Is the STM32H573MIY3QTR compatible with optical pick-and-place?
My PCBA house says that they routinely solder WLCSP packages. Their pick and place machines have "optical alignment" but no "camera alignment". I assume that "optical ...
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How to fix a worn-out PCB switch pad?
Trying to replace little button switches to bigger ones, so I did a bad soldering job and ended up wearing out switch 2.
Where I'm pointing with the red arrows, this contact pads do NOT contact. I try ...
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How can I resolve a bridging issue on a fine pitch connector
Experiencing problems with bridging on a fine-pitch connector in wave-soldering process.
Bridge is always on the same spot between a lead and a next empty pad.
Because of the solder protrusion into ...
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How do I solder this USB C saddle connector
https://www.digikey.com/en/products/detail/molex/1054440001/5843889
I realized after the fact that the recommended PCB width for this connector is 0.8mm, however I needed my PCB to be 1.6mm. How out ...
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How do you desolder an ESP32-C3-WROOM? Is it even possible?
So I've seen a ridiculous amount videos on desoldering all with the hopes of figuring out how to desolder an ESP32-C3-WROOM.
This chip has a heatsink ground and that's what makes it difficult.
In an ...
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Are tin whiskers an issue for hobbyist electronics?
A long time ago I was reading about lead and non-lead solder when deciding what to buy to start soldering and found about tin whiskers. It made me a little uncomfortable to think about little metallic ...
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Can I use super glue or hot glue as an insulator/solder mask for a small circuit?
I finished soldering a small motor driver circuit 3x8 (perfboard) using some SMD components and since the connections seem a bit flimsy and the overall soldering isn't very neat.
I wanted to use ...
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Rosin Atomizer not producing white deposit is there something wrong?
I have just bought a Rosin Atomizer pen. I used two different kind of flux in the pot. White fumes were produced and deposited on the board. However I tried all three levels of heat of the pen but I ...
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