Category:PCB Solder Paste
Solder paste is a material used in the manufacture of printed circuit boards to connect surface mount components to pads on the board. It is also possible to solder through hole pin in paste components by print solder paste in/over the holes.
I am wave soldering a single sided through hole PCB array with (6) .040" round diameter pins that sit .5" off the PCB, and .080" apart. The problem being experienced is that solderballs are appearing ...(view more)
Hello, Is the volume of flux paste critical over reflow temp. profile and belt speed?.(view more)
I am looking for suggestions on " How to remove solder Balls". We have some designs and tools where nothing can be done economically except to remove the solder balls manually. We are using "Probe" pi...(view more)
Hi, I read an article that says "Flux selection usually depends on the following factors": a) Solderability of pcb base metal or coating b) Corrosivity of vapours and residues c) electrica...(view more)
Is it possible to achieve a 100% top-side solder fillet where pin 1 on the device is attached to a ground plane ? we've optimized the wave soldering and fluxing operations, but without much success on...(view more)
hi, NEMI recommends separate solders for reflow soldering and wave soldering. Reflow soldering- Sn-3.9Ag-0.7Cu Wave soldering- Sn-0.7CU Wave soldering- Sn-0.7Ag What will happen if a mixed technology ...(view more)
We are exploring ways to reduce the waste of solder paste. Here are some of the ideas I have in mind: 1) To use paste supplied in Syringe instead of jar. Paste that are opened more than 8 hours ...(view more)
Hi I do not work for a board house but a manufacturing facility where we do a considerable amount of soldering wires to through holes. We pretin our through holes on both sides of the PCB prior to ref...(view more)
Hi I have solder paste that suppose to be stored to 0 - 10 degree Celsius. However due to broken fridge, we decided to stored on -40 degree Celsius freezer. Does the solder paste still good to b...(view more)
I am looking for opinions on how much larger soldermask pads should be versus the copper. I am aware that some pcb manufacturers can hold tighter tolerances than others but is there an IPC recommendat...(view more)