Soldering is the metallurgic process used to fix electronic components to a PCB. Soldering can be done by hand or automatic. PTH boards were usually wave soldered, SMT uses reflow technology.

learn more… | top users | synonyms (4)

2
votes
2answers
92 views

Is there any problem soldering a device while it's powered on?

I'm frequently tempted to solder to devices that are still powered. Assuming that: it's a low-voltage device there's nothing static-sensitive on the board I'm not going to short anything out ...
0
votes
1answer
63 views

Temperatures for replacing BGA chip?

Newbie here who is going to try his hand at replacing a BGA chip on a laptop motherboard. I have ordered a new chip: NVIDIA G84-950-A2, and want to confirm some temperatures. Based on some ...
3
votes
3answers
89 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 ...
2
votes
2answers
64 views

Can I solder high power 1W LEDS on aluminum with 60/40 solder? [duplicate]

I want to create my own light source using high power 1W LEDs. Can I solder high power 1W LEDS on aluminum with 60/40 solder? Here's a picture of a potential heatsink
0
votes
1answer
61 views

Physically sharing 5v and ground between multiple sensors

I'm using the Adafruit Trinket with two sensors that both need to be connected to power/ground pins (Trinket has one 5v output power and one ground). The final size of a whole thing matters so I ...
3
votes
2answers
118 views

Why can't I solder to this micro USB adapter?

I cut the head off a micro USB power supply thinking I could improvise a full micro USB cable. I found only Vcc and gnd wires. So, I decided to tear into the connector itself. Inside the connector was ...
1
vote
0answers
54 views

RGB Cable Assignments - help

I have a video cable D-Sub 9 pin. Someone know the connector pin assignments to do a RGB 3 bnc cable? Someone can help me? Below, the image of description of the cable
0
votes
2answers
51 views

Can I use aluminum tape or naked two paralleled striped cables to connect parallel LED strips?

I need to parallel connected couple dozen cut LED strips. The total current reaching them won't exceed around 2 amps. My constraint: I can not order any more components for the job. My tools: ...
1
vote
1answer
85 views

Melted Electrical Tape Toxic?

I'm not very experienced with electrical soldering, but I decided to give it a go. I don't have any kind of clamp to hold the protoboard in place, so I used electrical tape to hold it down to the ...
1
vote
1answer
88 views

Best way to hand solder pads with castelations to wires

I have ordered a cheap XS3868 A2DP Bluetooth model, and don't know what is the best way to solder its joints to a thin wire such as AWG 30 or similar. For reference, here is a picture of the joints: ...
2
votes
0answers
48 views

Where to find ICs in package sizes good for soldering? [closed]

I'd like to know the best places to find ICs that you can solder with. A lot of the package sizes I come across are way too small to solder by hand. I prefer through hole and sockets (like pdip), but ...
14
votes
11answers
2k views

How to solder with one hand?

I am a beginner at electronics. I don't have many tools and stuff, so I am forced to solder by hand. I don't have a pcb to solder on, so I usually just solder the wires together, but it's really ...
6
votes
5answers
750 views

Does “Connected” mean solder together?

Looking here, I am shown that the connecting symbol, means the wires are, literally "connected" as shown below. I am currently working on trying to decipher an FM Radio schematic, but am having ...
2
votes
2answers
213 views

What's the easiest way to solder TSSOP parts?

I'm limited by DIP so I want to branch out but my hand is shaky as it is with DIP so I can't even imagine trying to solder TSSOP. Are there easy methods for this? Do I need better equipment? I heard ...
2
votes
2answers
78 views

Is soldering extra wires to increase current capacity on a pcb trace good design?

I was working on a bunch of PC PSU organ donors and noticed that on lots of them through all the wires that lead the power to the outside there were wires soldered, and lots of solder added. This is ...
1
vote
2answers
61 views

What is the proper way to preserve solder iron tips? [duplicate]

My question is should you turn off a solder iron to preserve tip when not in use. I am currently working on a project which requires sometimes a lot of soldering and sometimes occasional soldering to ...
-2
votes
3answers
96 views

Best soldering iron for electronics projects [closed]

I was working with someone today trying to build a radio receiver and transceiver. First we went to build the coil needed and as it turns out the soldering iron we had bit the dust. So we went to use ...
13
votes
4answers
2k views

Is it worth reusing old components

I find myself constantly trying to recycle old components in my new projects. Yesterday, I needed a demultiplexer so I just took it out from some old phone board... Demultiplexers cost basically ...
1
vote
4answers
157 views

How do I solder this tiny QFN chip

I am not very experienced with soldering. I have a basic soldering iron with a new tip, and a third hand. Last time I tried soldering wires to a ble chip that looked like this, I ruined two chips in ...
1
vote
0answers
50 views

What's the best way to secure an input-port onto a PCB by hand? [closed]

I have an expensive Rosewill keyboard that has a serious design flaw: the usb input-port is secured solely by two thin metal wires soldered onto the PCB. Despite handling it very carefully, the ...
0
votes
2answers
62 views

Soldering below an adapter

As partly derived from the following question: How to solder under already soldered parts?: I have the same problem as described in the other question (unsoldered wiring through the pcb, now no ...
1
vote
2answers
396 views

Can I dip a soldering iron in water to cool it down?

I have a cheapo soldering station (Duratool D02265). It is fine for what I need. But, I often want to swap the tips round quickly, without waiting for ages for it to cool down! I was wondering: Can ...
1
vote
1answer
87 views

How to solder under already soldered parts?

I soldered several pin rows on my pcb, and thought that both sides of the pcb are already connected. Therefore I only soldered the pin rows on the bottom of the pcb. Unfortunately they weren't ...
1
vote
2answers
126 views

What is the name of the connector which hakko soldering irons have

I would like to build a soldering station for a Hakko 907 soldering iron, but i don't know the name of the connector what I'm going to need. Here is a link for the soldering iron that I have ...
1
vote
2answers
86 views

How should I solder one board to another?

I have a small power regulator/charger and a IOIO-OTG that I'm trying to solder onto my protoboard. My current idea is to use male/male headers. Is there another way? What is the best practice when ...
0
votes
2answers
63 views

What is the difference between a 2 and a 3 solder terminals socket (coaxial jack dc)

I'm not pro with electronics and electricity and I want to replace my notebook socket so I'm looking for a coaxial jack dc socket but, as I only have two cables (a positive and a negative one) to ...
0
votes
2answers
165 views

Can I solder back together a single broken copper winding wire in an electric washing machine motor? [closed]

Can I solder back together a single broken copper winding wire in an electric washing machine motor? This is the motor: ...
0
votes
2answers
78 views

Soldering problem when changing component on tablet board [closed]

I needed to change demaged Schottky SMD diode (2.2x1.2mm) at chineese tablet board. But I was not able to melt solder even I used hot gun at 400°C or soldering tip at 480°C. Finally I more or less ...
1
vote
1answer
110 views

How can I solder LCD Pins when solder does not “stick”?

I have a 16 * 2 LCD Display, with 16 input pins. However while I am soldering the pins it it does not stick or "take". How can I fix this? Is there any other metal for soldering a display ?
9
votes
2answers
671 views

Strange Solder Spots on PCB

I was tearing down some old CD drives and while taking a look to the PCB I found two pointy solder spots, connected to the first pin of each side of a chip which makes me think is an EEPROM. There ...
1
vote
1answer
137 views

Can this be reworked with a hot air gun?

I posted before about the Microchip RN4020 (Bluetooth Low Energy) PicTail failing. I have some spare RN4020 modules and access to a heat gun. If I can take this RN4020 off and put a new one on, how ...
0
votes
1answer
125 views

What is the type of solder used in a playstation 3 (PS3)? And its melting temperature?

I have a hot air station and I'm trying to replace the HDMI port on a PS3 (playstation 3). The problem I'm having is trying to melt the solder on the hdmi port. I'm curious to what kind of solder its ...
0
votes
0answers
47 views

Soldering oxidized parts

I have some old parts I would like to solder. The problem is that the matal pins/legs got oxidized over time and it is very hard (impossible) to get lead on them. I tried to use different fluxes but I ...
12
votes
6answers
2k views

What is the purpose of a PCB with no copper tracks, but only unconnected copper rings?

I have a PCB which has the perfect size for a project of mine, so I would like to use it if possible. However, the copper plating on the back side of PCB only surrounds the individual holes (that is, ...
2
votes
2answers
218 views

Consequences of mixing lead and lead-free alloys when soldering

Would it be a problem to use a lead solder paste to solder lead-free BGA package parts? Are there contamination/compatibility issues? Does it affect the physical connection integrity between the ...
4
votes
1answer
345 views

What is the “temperature code” of a soldering tip?

I am looking for a replacement tip similar to the ones below on the picture. On the bottom of my tip there is a number 6 which might be this "temperature code" that I found next to these types of tips ...
5
votes
3answers
655 views

Will solder usually connect copper vias on a 2-sided PCB?

I've seen videos where the board is suspended in a solution with an applied voltage to plate the vias, but I don't really have the resources to do that. Is soldering parts a reliable method to ensure ...
2
votes
2answers
116 views

Removing hot glue

When modding electronics it is usually recommended to apply copious amounts of hot glues when you solder a wire to a board contact pad to prevent accidental removal of said pad from the board.. I did ...
-1
votes
2answers
109 views

How do I solder to these pads?

Quick question. I'm trying solder some wires onto the 5 pads (top right of board) in the image. What's the best way to achieve this? I cant get the solder to stick to the board and I have no flux. I ...
6
votes
1answer
173 views

Soldering BGA components DIY

If I understood correctly, current BGA components contain solder balls under the package. Do I still need additional solder paste to put on the board, or the amount of solder on the component contacts ...
1
vote
0answers
65 views

Do I need to fill in the vias under BGA pads?

I have a very dense BGA footprint. There is no way I can place the via between the pads - the PCB manufacture's tolerances do not let me. Also, the thinnest allowable traces do not fit between the ...
0
votes
0answers
63 views

How did soldering a different pin cause my IC to die?

I have an instrumentation amplifier and an op-amp on this PCB (home made), and everything was working fine. JP1/2/3 are all 2.54mm jumpers. Like so: Today I decided to solder two long wires onto ...
1
vote
1answer
181 views

How can I solder this circuit board without breaking it?

I bought a current sensor (link). I would like to connect it to my project, and I was planning to do so by just soldering on copper wires. There is a resistor on each side, with blobs of tin on ...
1
vote
1answer
58 views

Cleaning no clean flux paste

I am using no-clean flux paste for assembling the PCB board. Although it is 'no-clean', I need to clean it. Can anyone please suggest on cleaning the 'no-clean' flux? What do I need? And how to clean? ...
0
votes
2answers
59 views

How can I fix this Firewire 800 header by soldering? [closed]

Unfortunately I found the headers on my computer's belkin 3-port Firewire 800 all tilted back somehow, and they snapped off when I tilted them forward to where they should be. As a quick fix, I have a ...
0
votes
0answers
84 views

Feed Raspberry Pi camera module with external clock signal

I want to frame synchronize multiple Raspberry Pi camera modules - I guess I can do this by feeding all the modules with a single external clock signal. The thing is being discussed in this post. The ...
5
votes
3answers
116 views

How do I pick a flux cleaner that's safe for use without industrial ventilation?

I was looking at getting this flux cleaner: Fluxclene FLU200D but then I noticed that in the datasheet, it mentions an inhalation toxicity of 300 ppm. That sounds like it's easily exceeded by just ...
-1
votes
1answer
29 views

Conductive welding primer on fabric

I saw the discussions about conductive fabric with the links to lessemf.com and others. I'd like to get anyone's thoughts about painting a schematic on cloth using welding conductive primer such as ...
0
votes
3answers
222 views

What is the best way to solder these wires to circuit board?

What is the best way to solder these stranded wires onto a vero board (strip board)? I am thinking maybe using some kind of connector instead of just soldering on. It will make things more flexible. ...
-1
votes
1answer
59 views

Elongate the power supply p4 connector [closed]

I've got pico-psu, tiny little power supply for computers. Recently I've moved onto a new motherboard, connectors on this mobo are located further than before. So I had to elongate psu-p4 connector ...