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.

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37 views

What is resin cored solder wire?

Recently I went shopping for more electrical components and in my list was solder wire. I bought one reel of solder wire from an indigenous company called Oswal. It is a 60/40 tin:lead solder wire. ...
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1answer
50 views

how to solder MEMS microphone to PCB at home? [closed]

I would like to experiment with audio applications using MEMS microphone. The problem is i cannot think of a way to solder these microphones on a pcb as PCB prototype manufacturers that i know won't ...
0
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1answer
30 views

Senseo & Raspberry PI soldering circuit board

I am kinda new to the whole hardware stuff and as an amateur I am working on a little project. I would like to connect my senseo machine to my Raspberry Pi. I've got a senseo HD7810 and a Raspberry Pi ...
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1answer
49 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 ...
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1answer
107 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 ...
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0answers
34 views

Diy mini soldring iron

I was wondering, I am trying to create a mini diy soldering iron using some nichrome wire. I wanted to know if I could use a 3.7v Lipo phone battery? Is it going to short out the battery if I use it ...
0
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1answer
71 views

Best way to solder connections between header posts?

I have a project that uses about 200 solderless jumper wires connecting header posts from one circuit board to the next. Now that the whole thing works, I want to ditch the "temporary" connections in ...
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3answers
90 views

Can anti-static tweezers replace wrist straps?

I need to solder ESD-sensitive components. Can I get rid of my ESD wrist strap if my tweezers are anti-static?
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1answer
72 views

Wave Solder an Alkaline Battery on a PCB (any concerns)? [duplicate]

I have a specific application that requires a board to be powered by Alkaline batteries and would like to solder direct to the PCB using wave solder vs. hand solder (need to consider a high volume ...
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1answer
38 views

Solder old Home-Cinema wire to Audio Jack Plug [closed]

So I have this ancient Home-Cinema (Panasonic SA-HT540) and the main unit appears to be broken. The speakers should work just fine though. I'm planning to solder the speaker-wire (which is a simple ...
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2answers
3k views

Why are SMD LEDs shipped in a sealed bag containing desiccant?

I had a selection of 0805 LEDs in my last Mouser order and was a bit surprised to discover they arrived in heat-sealed (rather than folded and taped with sticker) bags containing a desiccant bag and ...
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1answer
34 views

Solder multiple microphone cables [closed]

so I want to build a program that is going to turn on specific microphones through out the building. But that is not the problem, the problem is that I obviously need multiple microphones to place ...
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1answer
78 views

Soldering to PCB edge connector coated for FPC contact

Figure 1. (1) Lenovo keyboard controller (upside down), (2) keyboard membrane lower layer and (3) upper layer. The spacer layer is just about visible around the contact dots. I'm building a ...
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2answers
53 views

Connecting and soldering audio cable of several earbuds, but none is working

I have about 10 sets of earbuds accumulated over the years, where just one of the two is working or the jack is broken, so I thought to try to fix them. I've tried mixing several of them, in example ...
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0answers
37 views

Verifying Pin In/Out Connections

I'd like to verify that what I'm planning to do will work before purchasing a preamplifier. I want to bypass the need for a case to interface with the preamplifier and want to just solder to the ...
0
votes
1answer
39 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 ...
2
votes
2answers
359 views

Accidentally removed SMD pad

I had been attempting to desolder some SMD ceramic capacitors off a PCB to measure their capacitance. Unfortunately I am quite new to soldering and have managed to screw up. The below picture shows ...
5
votes
5answers
119 views

How to test SMD bluetooth modules without soldering them to a board [duplicate]

I have made a costum PCB with components and a WT51822-S2 bluetooth module. After testing, there seems to be a low percentage of modules that have a fault in them. Since they are SMD modules, with ...
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1answer
66 views

Ease of use of SMD Led components [closed]

I was thinking about inserting some lights in postcards. But classic leds would increase the thickness too much. Is it easy enough to use this kind of component for a simple circuit(just one or two ...
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3answers
141 views

Can I use this 950° soldering iron on electronics?

I purchased this soldering iron yesterday and after doing some research I'm not convinced it is safe to use on electronics. It doesn't state the wattage anywhere and I can't find it online. It only ...
3
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2answers
120 views

Possible to Solder top of through-hole header?

I have designed a small 2-sided PCB with through-hole parts, which I plan to have fabbed professionally. Given the lack of space (2"x2" was a design constraint to keep costs low, as I will need a ...
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2answers
124 views

How safe is my soldering iron? [closed]

I'm have a low cost (<2$) soldering iron, similar to the one shown in the image, except that it has 3 plug terminals. Suddenly something got me thinking about safety, out of curiosity I cut the ...
0
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1answer
60 views

Mounting a LCD display to a PCB

I'm working on a project that involves this LCD for a PCB. From the drawing, I can easily tell how to connect the pins. But I am not sure how to tell from the drawing how the display should be ...
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1answer
60 views

One flux for all electric soldering?

My understanding is that standard electrical soldering fluxes will not be effective on aluminum or stainless steels. Is that correct? But are all rosin fluxes adequate for the other metals ...
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1answer
88 views

Moderately easy computer circuit to build? [closed]

I have a project were I need to make a circuit, and I want to make a circuit that I can put into my computer, maybe in the PCI-E slot. I was thinking of maybe building a capture card or sound card, ...
3
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1answer
62 views

Soldering Caps Across Motor Terminals

I'm trying to solder 0.1uF capacitors across DC motor terminals to suppress motor noise, as seen here and here, but it's impossible to solder to the motor case. Motor case never holds the solder. ...
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1answer
235 views

Diagnosing potential damage to garden solar light

I'm just getting started with electronics and so for a simple project I tried to desolder the LED from a garden solar light in order to attach a female header (I trimmed it to 2 pins). My intention ...
0
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1answer
36 views

What type of wire should be used for 230 v ac while using this relay

I want to drive a 230v bulb with the help of a relay, so I soldered a 5v relay on a perforated board with a transistor driver circuit which is working perfectly fine. The relay I am using is HL ...
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3answers
87 views

How quickly would a pocket blowtorch ruin PCB traces?

I need to remove an obtrusive Mini USB port from a small PCB, and I initially wanted to use my Soto Pocket Torch to melt all of the leads at once and remove it. I've tried desoldering braids and ...
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6answers
438 views

Desoldering a tricky DC jack

I'm trying to replace a faulty DC power jack on a laptop, and having quite a difficult time with it. At this point, I'm not sure if the problem is with my equipment, or my technique. Equipment: ...
0
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1answer
80 views

How to avoid damaging vacuum tubes and gas-filled tubes during soldering?

Is it possible to damage a vacuum tube or gas-filled tube while soldering to it (thermal shock?), and if so, are there any special precautions that should be taken while soldering tubes to avoid ...
0
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1answer
117 views

USB Charge and data separate cables

Is it possible to split micro USB to USB cable so two cables (data + and data -) go to the PC with USB and two other power cables go to power brick?
6
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1answer
493 views

White solder pads on through-hole PCB

They look like covers at first glance but they aren't stickered on. I've never seen pads like this and searching doesn't bring up any results. Any information on these?
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2answers
740 views

Why not make soldering iron tips out of tin?

It seems illogical to me to make a soldering iron tip out of steel coated copper. If tin is a superior material (notice the anachronistic use of the term "tinning" used today), then why not just make ...
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1answer
55 views

Electronic soldering and repair for a newbie

So, recently, I've been trying to get more skilled with electronics to prepare me for college, starting with soldering. I mentioned this to someone I know, and he gave me his broken E-Cig, saying I ...
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3answers
79 views

how can we make a signal out of a 2 pin mic output

ok im looking to make this type of setup so that i can use its output pin to read via analog. this is the mic i got and would like to make that 3rd pinout which as you can see it only has 2 and ...
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1answer
46 views

How much track width should I leave while soldering metallised polypropylene capacitors carrying around 6.25 Amps?

I am not using a PCB for this and I would be soldering on a dot board and making the PCB tracks myself. I was advised that I make the solder tracks as wide as possible for allowing high current to ...
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1answer
82 views

Fumes from soldering [duplicate]

I breathe alot of soldering fumes and i don't have anything that is used to remove this fumes while soldering, is it really bad for my health? How it affects the brain and other organs?
2
votes
1answer
124 views

I2C camera not working 100% of the time

This is my stereoscopic system: I'm using a zedboard to pilot two i2c-camera MT9D111: http://www.dragonwake.com/download/camera/MT9D111/mt9d111_rev5.pdf Camera PCB Information: ...
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1answer
62 views

How to check female header connection?

I am very inexperienced at electronics, but I have recently tried to connect a wireless chip to my microcontroller. I soldered some header pins to my board to allow me to remove the chip when needed ...
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3answers
78 views

Soldering error with wire

I was soldering a magnet wire with a normal copper wire, and while doing that, i burned a small part of the magnet wire, so will this affect the conductance of the wire??
3
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2answers
171 views

100nF MLCC bypass capacitor spontaneously exploding on 3.3V bus, how does this even happen?

A 1608/0603 multilayer ceramic chip capacitor was functioning as a bypass capacitor for the 3.3V supply of a InvenSense MPU-6050 6 axis (gyro + accelerometer) MEMS sensor. It somehow exploded forming ...
0
votes
1answer
102 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 ...
1
vote
1answer
200 views

Hand soldering QFP component

I recently came across this video on YouTube, in which the guy is soldering a .5 mm QFP component. Hand soldering a .5 mm QFP Chip As I haven't done a lot of soldering in my life (and never used ...
3
votes
1answer
123 views

Solder paste stencil application

I am trying to do reflow soldering with a stencil for the first time. I have done some reflow soldering before, but every time I manually applied the paste using a small syringe + needle. These ...
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votes
1answer
35 views

How to connect Phone to Robot while charging phone from external battery? [closed]

I am controlling a robot via usb from an Android phone running the robot's code. This phone has a poor battery and I need to extend its life with a USB charger (can't change phones). How can I charge ...
3
votes
2answers
125 views

ENIG or HASL for prototype with small pitch and expectation to need rework

I have a project where I'm about to order the PCB's for a first prototype, and I'm staring at the option of HASL vs. ENIG on the website. I will hand solder it with an iron, the smallest pitch part is ...
0
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3answers
79 views

Soldering SOT-23

I'm working on a DYI battery monitor project and the possibility of using an INA169 came up. That's a SOT-23 packaged component. I have minimal soldering skills so I'm looking for some advice: Can I ...
7
votes
4answers
1k views

Soldering iron tip grinding

I have an ordinary Weller soldering iron with a conical tip, which I fear does not transfer much heat to the area. Since I am planning to do a dead bug project I thought it would be better to get a ...
0
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1answer
54 views

ET-3400A soldering questions

I recently got an et-3400a and there is no model for it online, there is one for the et-3400 though, I was wondering what the spots marked AA, AB, ST1, ST2, etc.. do or just the raindrop shaped ...