All Questions
Tagged with pcb-assembly soldering
73
questions
6
votes
3
answers
1k
views
What kind of breadboard and prototyping board do I need for this right-angle DB25 connector?
What kind of breadboard and prototyping board do I need to fit this right-angle DB25 connector?
I'm new to soldering and don't know what the standards are. Additional information on this subject ...
- 2,885
0
votes
0
answers
283
views
How long can the leads protrude for a typical selective solder machine?
I have an LCD who's leads extend about 10mm past the board surface.
Can a typical selective solder machine fountain reach this high?
If not, any suggestions on the best way to handle long ...
- 10.2k
4
votes
1
answer
549
views
What is "Solder Soaking"?
I am reading "Advanced Thermal Management Solutions on PCBs for High Power Applications":
https://ats.net/wp-content/uploads/2014/04/Advanced-Thermal-Management-Solutions-on-PCBs-for-High-Power-...
- 2,018
2
votes
2
answers
1k
views
How is this kind of soldering done?
The solder fillets around the base of the header pins are almost flat - very different from the kind of fillets you'd expect to around a 0.1" header. These kind of fillets are very common on ST's ...
- 949
33
votes
6
answers
7k
views
SMD soldering: tiny components stick to tweezer point
When soldering SMD components, the 2-pinned ones (like resistors, capacitors, ...) are the hardest in my opinion.
I started long time ago with the 1206 format. Then scaled down to 0804, 0603 and ...
- 2,369
3
votes
2
answers
1k
views
Stencil at home with extremely small parts?
I was amazed lately to find out about solder paste - so we can assemble our PCB prototypes at home relatively easily.
The process seems easy, but now I started to suspect I am going to have a problem ...
0
votes
2
answers
1k
views
Small 'blistering' under surface-mount soldering attempt - is this a problem?
I am very new to SMT soldering - and have started with a small project.
I used resin flux, followed by a small amount of solder paste and then a hot air gun at around 373 degress celcius to flow the ...
- 454
3
votes
5
answers
3k
views
How do I assemble this LM3914 bar-graph board?
I bought some of these LM3914 boards from eBay:
The ad said "buyer needs to assemble it" which I was fine with. When I opened it up I saw a board like this:
I have the LM3914 chip (DIP 18) and the ...
- 908
20
votes
3
answers
2k
views
When and why use triangle solder joints
I found these triangular solder joints in a 24v power supply. Why are they made as triangles? This is the first time I have seen it and I was unable to google anything about it.
- 473
1
vote
1
answer
2k
views
aluminum PCB soldering techniques for prototypes
I am wondering if i ordered some aluminum pcbs that contain D2pak transistors and i want to solder a couple of them for testing is it possible using basic equipment or does it need an Reflow soldering ...
- 3,239
15
votes
4
answers
4k
views
Options for soldering a through hole PCB (e.g. Teensy) flush/flat on another PCB
I am looking to incorporate a Teensy board on my PCB. I want to solder the Teensy PCB onto my PCB. But I also want to minimize the height above my PCB as much as possible. Hence, I DO NOT want to ...
- 357
5
votes
7
answers
5k
views
Why are there no easy-to-solder SMD diodes in 0603 packages?
What seem to be the most popular SMD diodes currently come in SC-79 packages, but they super tiny and really hard to hand solder...
...and they also can be a hassle even for reflow.
So I thought I'...
- 10.2k
-2
votes
1
answer
357
views
Arcade stick PCB not working as expected
I am using Logitech precision PCB to make an arcade stick.
I am having a problem in button 1 (green) area.
While I try to solder button 1 via R2, I had a great difficulty - R2 resistor moved every ...
- 97
-2
votes
1
answer
231
views
How do I solder this red part in PCB?
I am making an arcade stick.
I was making good progress on the right hand side
but now stuck on this red circle bit.
For the RHS I had this socket(?) that I can put solder on easily
But this red ...
- 97
1
vote
1
answer
295
views
Best way to prototype a TDFN package chip (MAX9814 and MAX9820)?
For my engineering project, we wanted to use the gain control and amplifier available on these two chips, but are finding difficulty with prototyping them as they are so tiny. One of the chips is a 14 ...
