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)

0
votes
1answer
59 views

Max current through solder tracks?

I've searched Google and couldn't find a simple answer to this question. I'm guessing the only limiting factor is the solder's melting temperature? I don't think I should have a problem with < 20A, ...
0
votes
1answer
73 views

Documented health effects when exposed to solder / flux smoke? [duplicate]

I run a repair shop and occasionally we do soldering work, but nothing too crazy. I was wondering what are the documented health effects when exposed to solder smoke. We do have an open space with low ...
0
votes
1answer
64 views

Can I use masking tape for 12V max insulation?

Hello. Would it work if I put masking tape over a solder joint as insulation which would carry 12V max? I'm connecting a general-purpose 3-12V AC adapter to some wires. Any help would be appreciated. ...
6
votes
4answers
1k views

Which are the safety recommendations for soldering?

I was reading about tin alloys for electronics soldering and found it it has about 40% of lead in composition. Lead, everyone knows, it's very dangerous to breathe it due to being a heavy metal. Also, ...
0
votes
2answers
76 views

Soldering multiple resistors in series

I'm starting the wiring for my project and would like to solder two resistors together in series. There is good chance that the wire will be exposed to heat and gentle turbulence. What is the best ...
0
votes
1answer
44 views

Split USB Port Into 2 Separate Ports

I've a device (An old NES cart, actually) that I've fitted with a USB port and a flash drive. I'm using it in a NES to Raspberry Pi conversion. My idea was to have a port on the side for connecting to ...
1
vote
4answers
57 views

Cutting off metal anchor legs on an HDMI port or Metal connector? What to use?

I'm looking for some advice on how to cut an HDMI port anchor leg off using some type of miniature cutting wheel. I bought a dentist micro drill, but I'm unsure which type of burs to purchase and type ...
1
vote
1answer
77 views

Coating a soldered connection on a small circuit board

I have a small PCB, about the size of a quarter and having a Bluetooth chip on it. I have 4 wires soldered to the board. 2 of which are for a 3.7 Volt battery connection and 2 are to connect a small ...
0
votes
1answer
64 views

What will happen if I solder two 120mm 12v computer fans to one 12v phone charger?

After enough YouTubing and self educating, I decided to take the plunge and purchase a soldering iron. It took me two attempts (apparently the cable of the charger that has the grey dashes on it is ...
1
vote
1answer
57 views

How do I solder a wire to a motor body?

I'm trying to solder a few capacitor grounds to a small motor body. I'm using 60/40 flux core solder and I cannot get the solder to stick to the body of the motor! Is there some secret way of doing ...
0
votes
1answer
68 views

Do soldering glasses protect eyes from capacitor explosion

I am concerned about safety while working with electrolytic capacitors. Can I use soldering safety glasses to protect my eyes while working with electrolytic capacitors?
0
votes
3answers
106 views

What soldering kit for tiny electronics? [duplicate]

This is a my first foray into building electronics. I am building a project that uses chip/SMD LEDs and resistors. What type of soldering kit should I be using for those devices?
7
votes
1answer
719 views

What are the dents for?

I bought a few bc417 serial bluetooth modules which have pins that look like this: Is there a standard name for this kind of pin? I believe I can treat them like any other SMD pin, but I'm curious ...
0
votes
2answers
52 views

Solderless headers?

Where can I find solderless headers suitable for a solderless breadboard.? This is for a raspberry pi project I'm working on which requires the mounting of an LCD screen. I have explored the ...
0
votes
0answers
22 views

What is the temperature vs time relationship for derating soldering iron dwell time?

Another question here involves someone using a 100 W iron to solder electronic components. This is much hotter than required, in my experience. The soldering specs for ICs are typically ...
1
vote
3answers
91 views

100W Soldering Iron Risks And Arduino

So I bought a 20W soldering iron a while ago and I found the experience very frustrating as the tip does not get hot enough quickly and when it does melt the solder it gets cold so quick I cant get ...
1
vote
1answer
37 views

Modifying a Boss DS-1 Distortion pedal, possible lifted pads

My apologies if this is in the wrong place, seems like the people on this section would know what to do in this situation. I am brand new to circuit bending and electronics work in general, really ...
0
votes
3answers
94 views

Working with a tiny IC

I have recently purchased several Atmel's touch sensor IC's AT42QT1010 which are extremely tiny (1.6mm x 2.9mm) and I would like to be able to mount them on a breadboard. I have tried soldering them ...
0
votes
3answers
108 views

Soldering, Chips for Beginners

I am currently running a club for kids (9-11) for Arduino and we are making a robot and are moving on from motor/transistor drivers to half-hbridge (so we can go backwards). The kids are learning to ...
2
votes
3answers
84 views

Is it possible to solder this non-standard package (sim900) using hot-air station?

I don't have any experience with hot-air soldering. Would it be possible for a complete newbie to solder this kind of package using a hot-air station: I only need to solder pads closer to the edges ...
14
votes
4answers
2k views

Are solder bridges on chips always bad?

I just bought my Arduino Ethernet shield – a knock-off one for $10 instead of $60. I connected it up, but it doesn’t work – LEDs light up but do not blink, and no ethernet link is established ...
0
votes
0answers
104 views

Tips for soldering delicate smd ICs without smd equipment

Lets say I have a physically rather delicate part like a MAX6143AASA50 (a SOIC-8 package, the one I am going to solder, but the exact chip doesn't really matter) and want to solder it, but don't have ...
0
votes
1answer
57 views

Is it mandatory to use thermals in hand soldered PCBs?

I understand thermals are used to prevent tombstoning during oven soldering by allowing all pads to heat up more evenly, but are they necessary when the PCB is going to be soldered by hand? Consider ...
0
votes
2answers
64 views

How to apply temporary pins to PCB

I want to temporarily solder a pin on my pcb where I know for a fact that it's going to be moved soon. Is there a better way? Is there like a plastic piece I can attach to the other side of the ...
20
votes
6answers
1k views

How to hold SMD parts in place while soldering?

I go through this every time I have PCBs I need to populate with SMD parts, and this has become more an issue as pin spacings have gotten tighter, and my hands have become less steady with age. So ...
1
vote
1answer
68 views

Could cold Solder be the cause of burnt components?

I have a mainboard of a slot machine that has burnt resistors. I wonder if this could be related to cold solder, because the slot machine remains on for long periods of time (months at a time) and ...
11
votes
2answers
288 views

How much larger should a plated-through hole be than lead diameter to get good solder wetting?

I'm designing a new PCB where I have a whack of connectors that have to line up with the metalwork. These are a two-piece Neutrik XLR connector where the insert is soldered to the PCB and then mates ...
1
vote
3answers
146 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 ...
2
votes
2answers
98 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
79 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
113 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
76 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
66 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
144 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
67 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
73 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
120 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
2answers
149 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
55 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 ...
15
votes
11answers
3k 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
779 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
224 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
111 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
85 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
157 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 ...
2
votes
4answers
198 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
52 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
64 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
465 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 ...