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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68 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
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1answer
89 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: ...
1
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1answer
55 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
67 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
127 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 ...
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1answer
58 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
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1answer
166 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 ...
2
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1answer
79 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 ...
0
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1answer
18 views

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

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
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2answers
68 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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0answers
44 views

Why are some electronic components glued together on a PCB? [duplicate]

I recently repaired a LCD screen SMPS (by replacing a few caps). I found out that several components are glued together using sort of white glue. I was wondering why it is like that. On the ...
0
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3answers
74 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 ...
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3answers
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 ...
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1answer
48 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 ...
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1answer
49 views

how do you link components between them on a protoboard [duplicate]

I have the following protoboard (see picture below) Each hole has a distance of 0.5mm I want to link components between them. I found a few ways to do that: 1) Use tiny wires to connect the ...
0
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0answers
67 views

Through Hole Repair (Missing Pad, Car ECU)

I've got a older Toyota ECU here I'm trying to save, as even though I have a replacement, since it's 97 model year, keeping the original ecu will save me from having to figure out how to sync the ...
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8answers
234 views

Connecting / Soldering a Switch to Breadboard / PCB

I'm pretty new to electronics and I have just found these toggle switches. But I can't figure out how the connectors on the bottom are called in the english language .. :) And also, is there a way to ...
0
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0answers
50 views

Nixie Tube Clock Kit Issues

I recently purchased the Lena kit from Nixiekits.eu http://nixiekits.eu/Laura+Lars.htm The manual: http://nixiekits.eu/Downloads/USB_Nixie_Clocks_Aufbauanleitung.pdf After putting it together ...
2
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1answer
58 views

Connecting DB25 socket to protoboard/breadboard

I need to connect a DB25 connector to a breadboard. One way I can think of is buying a solder-cup connector (e.g. http://www.digikey.ca/product-detail/en/171-025-103L001/225ME-ND/858135) and wiring it ...
0
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1answer
119 views

Extending solder only PCB pins

What is the recommended way to make solid connections to the pins below? Can the soldering be avoided, and if not, what component should be used to provide the plug/unplug connection?
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1answer
32 views

CJMCU-75 — seting the I2C adress

I just got embedded system CJMCU-75 which has LM75A I2C temperature sensor on top of it. I dig into the LM75A documentation and found out that it's I2C address consists of four fixed MSB and three LSB ...
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1answer
48 views

How do you solder a metallised film capacitor?

I have recently bought some MKP film capacitors to make a capacitor bank in parallel. While viewing their datasheet, it was mentioned that the soldering temperature should not be over 600 degrees ...
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4answers
222 views

Excessive temperature on cheap soldering iron - will series capacitor fix it?

Soldering iron came in a $14 USD kit off eBay. Lots of neat stuff, but the iron became so hot as to badly damage a DIY Kit. After a 2nd chance w/ the same results, it was hacked, Heating element of ...
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1answer
52 views

Good fan speed for solder fumes

I am going to be soldering in an enclosed space, so I am building a fume extractor via ducts. My eventual plan is to have one fan near the vent, and another somewhere near the inlet to help the fumes ...
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1answer
46 views

Problem in soldering a kit

I bought a printed board online with components that I should solder. I had the map, and I soldered them, but when I tested the circuit with a 12 V battery it didn't work. The circuit is an audio ...
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2answers
107 views

Are these PCB , and if so can it be repaired?

I'm very new to soldering, and I think I have irreversibly damaged the circuit I was trying to fix. The joints are pretty burnt, but I read that in some cases you can scrape the carbon off and get ...
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1answer
147 views

Spark with 5 volts to solder (weld) tin

I recently visited a factory in China and saw people soldering headphone pins with a soldering device that gave sparks, melting the tin. The soldering iron was hooked up to a device and the pin was ...
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2answers
119 views

how to solder in this board [duplicate]

I have this board and it is the first time I work with it. How can I connect 2 elements in it, and how to solder IC with all the circuit lines that connect all the elements. EDIT
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2answers
92 views

is soldering necessary for a robotics and electronics hobbyist?

I know it is VERY common but I am worried about the exposure. I do understand it is minimal if an extraction device is used to get rid of the gasses and if a lead-free solder is used but I ...
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2answers
57 views

What can I do about this thermal pad?

I recently made a board for the TPA3004D2 Class-D Amplifier Chip. It has a fairly large thermal pad on the bottom for heat dissipation. I used an existing TQFP-48 library in Eagle that had a thermal ...
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2answers
172 views

Brand new soldering iron tip turns black, solder won't stick [duplicate]

I have a brand new soldering iron, the tip turned black while heating on my first use, and now solder won't stick to it, it just rolls off. All the answers in similar questions here tell me to stick ...
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1answer
99 views

What is the name/type for this soldering iron tip?

I got a old soldering iron, I'm trying to find the replacement tip but I don't know what to search for. When I search soldering iron tip it only show the hakko style tips. Can someone help me identify ...
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1answer
53 views

Please suggest me soldering station [closed]

I want to buy soldering station. Can you suggest me some? I don't want to buy some very expensive station (like Weller), but I don't want also some cheap station. I will use it firstly for some ...
6
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1answer
73 views

Soldering a male-female bus connector

'Stackable bus connectors' are common nowadays on Arduino and other boards where a single connector has both the male pins (for the board below) and female sockets (for the board above) In DIY ...
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2answers
475 views

Does leaving empty PCB holes filled with solder matter?

If I was soldering and I accidentally filled an unnecessary hole on my PCB with solder, is that a problem or can I just leave it filled? Thank you for answering this ! All help is appreciated! (And ...
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1answer
62 views

Help request to identify soldering station

I acquired this soldering station which does not have the manufacturer or model number on it. If someone could help to identify it, I would be very grateful. Thank you, Tom
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4answers
298 views

Methods for removing solder from inside a header socket

While soldering a header socket I sometimes apply too much solder and it flows through, partially filling in one or two of the female sockets holes. This prevents the male headers from being inserted ...
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1answer
69 views

is there a solderless solution for component with pins 1.70mm apart?

I have a CAT4101 http://www.onsemi.com/pub_link/Collateral/CAT4101-D.PDF constant current LED driver which has 5 pins at 1.70 mm BSC apart. As I am a newbie I would prefer to use only a solderless ...
2
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2answers
342 views

solder iron tip issues

Got a temperature regulated solder iron, always had the temp set to 350C. Used the wet sponge after every solder job to clean the tip. Used a 60/40 rosin core 0.6mm solder. After week of use, when ...
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3answers
95 views

Question after my first attempt with reflow soldering

I have a couple of questions, plus I'd invite any comments/feedback/suggestions to improve my results. I used solder paste Chipquik SMD291AX10 (Sn 63 / Pb 37) on the pads and also flux (Chipquik ...
3
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1answer
115 views

Soldering specific wire, solder won't stick + makes iron tip black

When I solder a specific wire, solder won't stick and it leaves my iron tip black. With many years of hobby electronics, I have never experienced this before. The wire is from a silicone encased LED ...
0
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1answer
72 views

Soldering iron tip size for through hole components

I want to solder through hole components on a 2.54mm pitch perforated board. I have a 30W soldering iron with a 2mm wide chisel tip. Is my tip too big for the job, should i buy a new one? Best ...
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0answers
45 views

placing hermetical packages on PCB and soldering

I stumbled upon some hermetically enclosed packaged - Link. The package has a small bulge/projection on the bottom. This makes the package leads basically float without contact with the PCB. How do we ...
3
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4answers
770 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 ...
3
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1answer
85 views

Do all/most SOIC chips whitstand the 235 degrees C for reflow soldering?

I want to try reflow soldering for several projects (small scale). For some of the components (e.g., resistors and ceramic capacitors), the datasheet does give specific information about maximum ...
6
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1answer
270 views

What are those black spots in these lead-free solder joints?

I have just changed to lead-free solder (I'm now using Chip Quik's "SMDSWLF.031, a Sn96.5/ Ag3.0/ Cu0.5 solder with 2.2% no-clean flux) but I'm not sure what I'm seeing when inspecting my boards. The ...
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2answers
61 views

Fan vs. Fume Extractor for Soldering

I solder about once or twice a week, and I use leaded, rosin-core solder from RadioShack(bought it before they went under). I do notice that their are flux fumes rising from the board when I solder ...
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3answers
107 views

Best Way to Solder/Desolder Surface Mount Components

I recently got my hands on some old motherboards/PCB's, and even though I know reusing parts from old PCB's is not as good as using new parts, I was wondering what the best way is to solder/Desolder ...
2
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2answers
185 views

Are black ash particles and holes on a cleaning sponge normal?

I've read in numerous places that an ordinary wet dish sponge can be used for cleaning the solder iron tip. I've taken a photo of what the sponge looked like after I cleaned by solder iron tip and ...
2
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2answers
116 views

Adding solder to PCB traces to increase current flow

If I have a PCB with standard 1.4 mil copper thickness. I have used a trace width calculator based on IPC-2221 to determine that a 2.72mm trace is enough to handle 5 amps for an "external layer in ...