All Questions
Tagged with through-hole soldering
27 questions
6
votes
7
answers
2k
views
What would cause desoldering braid to simply not work?
I'm trying to replace the triac in a floor lamp dimmer, and completely failing to remove solder from the pads with desoldering braid. I've desoldered plenty of times before, though admittedly not ...
- 163
1
vote
3
answers
213
views
Cleaning excess solder from small through-holes on a PCB
I am trying to desolder a micro connector, and one of the through-holes where the connector legs are soldered is so small that I cannot remove the excess solder. I have tried using flux, adding new ...
- 145
11
votes
5
answers
4k
views
How should I wire my circuit onto a perfboard?
I have built this circuit on a solderless breadboard, and now I want to build a permanent version. I have all the parts, I want to build it today.
How should I put this on a perfboard?
Note that I am ...
- 17.4k
1
vote
3
answers
569
views
Soldering through-hole components when using ground/Vcc planes?
I'm designing my first PCB (2-sided) and can't quite understand. I'm going to be soldering the through-hole components myself such as the resistors. Typically, I put a leg through the hole, heat them, ...
- 13
11
votes
5
answers
3k
views
Does the PCB have to be thinner than through-hole pin length?
If I have a part that has pins that are 1.2mm long. Can I use a PCB that is 1.2mm thick or does it need to be even thinner than that?
- 111
4
votes
1
answer
2k
views
Solder SMD on through hole
Can I just solder an SMD part directly on the through holes of the PCB?
The pitch of SMD matches the pitch of the through holes.
- 161
13
votes
6
answers
2k
views
Tips for optimizing through-hole soldering
I make and sell low voltage, mostly digital, retrocomputing expansion boards as a hobby/hustle. I use all through-hole components partly because of the retro aesthetic and partly because I find ...
- 503
1
vote
3
answers
4k
views
Through hole solder pad dimension rules?
Is there an electronic rule or just a rule of thumb regarding through hole solder pad dimensions?
That is, if I have a 0.025 inch diameter drill hole (suitable for 24AWG wire), what should be the ...
- 11
1
vote
1
answer
306
views
Placement of Through Hole with a High Tolerance Dimension
Beginner question here.
What does one do about the placement of the through hole when one dimension
of the part has a high tolerance.
For example, I place the through hole anticipating the center of ...
- 31
3
votes
1
answer
545
views
How do I solder thick goldplated DIA pins?
I am struggling with soldering some pretty think gold plated DIA pins to one of my boards.
I've tried various things such as;
Increasing the heat of my soldering iron, but am afraid of burning my ...
- 41
1
vote
0
answers
81
views
Reason for stepped pins on M12 circular connector
I've been looking at M12 circular connectors for a project I'm working on (for example this one, drawing here), and I've noticed that many/all of them have stepped pins that create a 3mm or so offset/...
- 688
1
vote
2
answers
1k
views
What solder for low temp removal and resoldering to pcb
Have an issue with some legacy system - need to replace throughhole parts on PCB in situ while PCB is sandwiched between two sheets of acrylic with only small holes to access the leads on one side (i....
- 470
0
votes
1
answer
260
views
Through-hole solder sparking
Here is a simple example of what been happening to various pcbs when I play with them. I have an arduino powered by USB. Then a 5V and GND connected to a logic level shifter's HIGH and GND ...
- 131
11
votes
2
answers
4k
views
How do surface mount components withstand heat of reflow while through hole components can not?
I have read some online tutorials about soldering through hole components which say that transistors and ICs are delicate components and can be easily damaged by heat. So they recommend to keep the ...
- 346
3
votes
3
answers
523
views
Damaged Solder Joint?
So I bought a SEGA CD off ebay and everything was fine until I decided that the duct tape that was holding the battery is was a poor substitute for a battery holder.
So I took my Model 1 apart begun ...
- 33
0
votes
1
answer
537
views
How to solder through-holes for quadcopter boards?
Its a flight controller for multicopters. Should i stick the wires from the top or bottom, and should i solder the top side or bottom side? I searched on youtube, but there is no definitive way to do ...
- 271
0
votes
1
answer
294
views
D1 mini - pin hole / track repair
I've just bought a very bad quality D1 mini board. While soldering pins, I made rookie mistakes and I had to desolder, then (really bad) pads got detached from pcb. I certainly don't have experience ...
- 137
2
votes
2
answers
545
views
Recommended pad size for desoldering?
I am designing a PCB that has will hold an Arduino Micro, as well as other components. One of the electrical engineer mentors that are overseeing the board development has told me to increase the ...
- 189
0
votes
1
answer
566
views
Unsolder large TO-220 or TO-247 packages
I'm aware this question may be construed as asking for advice but I'm going to venture to ask anyways. Does anyone have a good method for removing larger TO‑220 or TO‑247 packages? I ...
- 3,586
0
votes
1
answer
2k
views
Desoldering a TO-220 MOSFET from a plated through-hole board with SMD complications
I'm planning on replacing a TO-220F package MOSFET on a through-hole circuit board that also has SMD components on it. In this case, an SMD capacitor is connected to the source gate of the MOSFET by ...
4
votes
4
answers
1k
views
Is Saving Through-Hole Components Viable? [closed]
I recently got my hands on some old electronics. After getting some to work and failing to get others to work, I decided to simply desolder some of the through-hole components to possibly use in ...
- 321
2
votes
1
answer
2k
views
Solder through-hole or surface-mount components first?
I am new to surface mount soldering. On a board with both SMT and through-hole parts (header pins), which parts should I solder on first?
I imagine the technique I use for SMT soldering is important....
- 179
1
vote
3
answers
2k
views
Tips for desoldering difficult to desolder mini transformers
I have to replace a couple of small transformers without destroying the PCB or the transformers.
Unfortunately my phone camera is unusable so I need to describe them and what makes the situation so ...
- 6,698
3
votes
3
answers
658
views
Removing PCB from complex pattern of soldered-in thru-hole posts?
I have a PCB mounted to a chassis with 16 feedthrus, the feedthrus posts are soldered to plated thru-holes in the PCB. I would like to remove the PCB from the chassis, the problem is that I am unable ...
- 801
1
vote
4
answers
1k
views
High precision soldering of through hole components
I have a through hole component with many leads spaced closely together, see picture:
I'm looking to unsolder it from the PCB and then solder it back again. Unfortunately, the leads are spaced so ...
- 65
11
votes
4
answers
9k
views
Holding components without bending leads when soldering upside down?
I am gaining experience in soldering components onto PCBs. I'm working through some one sided through hole PCBs and one thing that I'm having trouble with is holding components once I flip the board. ...
- 1,831
3
votes
2
answers
890
views
PCB has strange looking pads, how do I solder them without impacting nearby surface mount components?
I've recently brought the px4fmu and px4ui boards. The px4io requires me to solder a power socket and headers onto it.
However there are surface mount components very close to the holes/pads. Also ...
- 133