Reflow soldering is a type of soldering where solder paste is applied to the pads, after which the components are placed on top and then it is baked in an oven.
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Why not reflow a PCB before placing parts?
A standard reflow method for low-volume assembly is:
Method A
Apply solder paste (using stencil or syringe)
Hand-place parts (using vacuum pickup pen or tweezers)
Oven reflow
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But what happens ...
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Questions about reflowing a motherboard
One of my laptop's DIMMs is dead, and working with less than my usual 8GB of RAM is brutal. Multiple sources suggest reflowing the board. I quite frequently tinker with/hack my electronics, but I've ...
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Do any SMT components require hand soldering due to heat limitations?
It has been claimed on another board that some SMT components cannot be used in an automated production line (i.e. reflow or wave soldering) because they cannot withstand the heat/temperature. Hand ...
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Temperature sensor recommendation
I am builing a homemade reflow oven, but I cant find a good and cheap temperature sensor that can survive the temperatures necessary for reflow (~250ºC or 482ºF).
Does anyone have a recommendation?
I ...
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Why does solder not conduct sometimes?
I was reflowing and a 2K 603 resistor partially tombstoned. There was solder connecting the lead to the pad, yet my DMM showed an open. When I heated both ends and the resistor came down and contacted ...
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DIY Reflow soldering
This is related to this question.
I'm trying to get started with a DIY reflow soldering station intended for my personal use. I'm planning on starting small and improving the system as time goes on ...
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Reflow oven AC cable splicing insulation and thermocouple readings
I'm building a reflow oven. I know what I'm doing, I just want to verify my plans to make sure I'm not doing anything stupid before I start.
The idea is to have an arduino (powered externally) ...
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What causes components to “jump” during reflow soldering?
I've been using a hot plate technique (with a PID controller / thermocouple / SSR setup) to get into making SMD boards. I had an interesting experience earlier today, and I was hoping some more ...
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How well do reflowed connectors self align?
I am thinking of using some Hirose DF40 PCB stacking connectors to stack together a bunch of PCBs. Each pair of PCBs would be connected by two connectors for mechanical stability.
These connectors ...
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how to solve the solder joints not shiny?
I have met a problem, need your help.
I had used Sn62Pb32Ag2 (liquid temperature is 179℃)solder paste to solder components for many years,solder joints always are shiny.
but recently,when I used it to ...
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873 views
Why and when to use reflow soldering?
I was looking at an instructable and they suggested using "reflow soldering" for a certain section. "Reflow" wasn't a concept i was familiar with, so i did some googling...
I got a basic description ...
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Have I cooked my caps?
Recently been calibrating my solder reflow oven to work with a higher temperature solder paste. Had a few boards come out that were slightly over done.
At 250 degrees Celsius I noticed that the silk ...
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319 views
Will “hot plate” reflow soldering work without a solder resist coating?
With a successful through-hole design under my belt I am now ready to try fabricating a board that uses surface-mount components. I have been reading about this, and have gathered that the DIY crowd ...
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Soldering heatsink pad on bottom of IC
I am attempting to make a board for the tlc5951 24-channel led driver to drive an 8x8 rgb led array. I have made what I think is a good eagle library for the sop-38 package, but I am not sure what to ...
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Any drawbacks to “low temp” lead-free solder paste?
I am about to try my first "reflow skillet" soldering job, and as I look at the available types of solder paste I see there are lead-free pastes with much lower melting temperatures than others.
For ...
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Is it advisable to use lead-free PCB and solder paste on a first SMD assembly job?
I am sending my first PCB design to Sunstone for manufacture and I need to decide whether to order the board finish lead-free. All of the components are lead-free, and I have not decided on solder ...
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SMT solder reflow temperature profile
I have read many website and forums about DIY reflow ovens for SMT soldering. I have also seen many solder profiles as specified by the solder manufacturers, component manufacturers, and other ...
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1answer
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Hot air lead-free BGA reflow
I'm experimenting with trying to reflow a 0.8mm BGA myself for prototypes/repairs.
I've solved the main problem: alignment. I've used my 3D printer to print custom board guides that align on large ...
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2answers
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Are PTC/resettable fuses really moisture senstive?
I recently bought some 0805 Multicomp PTC/resettable fuses from Farnell. They were MC36213 (500mA) and MC36206 (200mA). I plan to use these in product which may exist in a high humidity (~80-90%) ...
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Components on both sides of the board with reflow
Is it possible to place components on both sides of the board if I'm doing DIY toaster-oven style reflow soldering? I would think that doing the reflow twice (for the other side) might overheat the ...
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Reflow at home or solder manually?
I'm considering doing DIY SMT Reflow for production of my Super OSD project.
An overview of the component count:
Resistors: ~50 x 0603; precision 0.1% resistors as well as 1% and 5% components
...
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SMD solder now or later?
I'm soldering up some boards with smd parts, using a hot plate to reflow, and I'm (inevitably) realizing that I got some of the wrong parts. Now, is it better to leave the boards with smd components ...
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DIY BGA soldering feasability
BGA seems to be somewhat of a showstopper for the diy community, especially with the newer more powerful parts being almost exclusively bga. I know it can be done with the skillet/toaster oven ...
