Category:PCB Solder Paste

Group Administrators: 1 | Group Member: 198 | Group Threads: 217

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.

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4 comments
832 views

Solder Balls on end of long pins

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)

Josh
2017/2/27 6:01:44
5 comments
766 views

Flux paste volume

Hello, Is the volume of flux paste critical over reflow temp. profile and belt speed?.(view more)

alex.garciavillalobo
2017/2/27 5:49:39
5 comments
983 views

Tools / Methods to remove solder balls

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)

Oguz AGCELI
2017/2/27 5:20:32
5 comments
723 views

Wave Soldering Flus Selection

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)

kyleahampton
2017/2/27 4:16:15
5 comments
845 views

about wavesoldering

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)

rownickijan
2017/2/27 4:14:26
5 comments
736 views

lead-free mixed technolgy

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)

a.boehm
2017/2/27 3:37:52
4 comments
774 views

Reduction of solder paste usage

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)

gigisi1
2017/2/26 23:19:01
4 comments
807 views

Soldering wires to through holes

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)

tomasarizacrespo
2017/2/26 17:33:45
4 comments
772 views

solder paste storage to -40 degree celsius

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)

Gareth
2017/2/26 17:30:44
4 comments
843 views

Soldermask Compensation

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)

Artur Assun??o
2017/2/26 17:05:48

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