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How can I prevent solder from breaking off in the through-holes?
Believe it or not, the way you hold the bottle can make a big difference on how easily the cured mask is removed. Many operators hold the bottle at a 90° angle as they drag the dispensing tip across next...
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How do I use temporary solder mask to protect contacts from conformal coating?
If you think of spot mask as basically liquid masking tape, the application become more intuitive: 1) Apply the mask to the contact areas to protect. Allow mask to fully cure. 2) Apply the conformal next...
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How to I apply temporary solder mask?
Spot mask can be hand applied, dispensed with a pneumatic system, or stencil printed. To hand apply using a squeeze dispensing bottle: 1) hold the mask bottle upright, but at an angle (around 60°) 2) next...
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What flux should I use when replacing PCB components?
TraceTech No-clean Flux Pen is formulated to perform at the elevated temperatures of lead-free soldering but is also effective for tin-lead soldering as well. It's designed with a low surface tension next...
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How do you repair a broken trace on a PCB?
A common method of repairing a broken trace is to solder on a jumper, which is basically a wire bypass around the broken trace. This can be time-consuming and visually unappealing. Techspray offers TraceTech next...
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How do you remove conformal coating when repairing or reworking a PCB?
Techspray offers the TraceTech Conformal Coating Remover Pen that allows you to remove a tight area of coating around a repair area without affecting the rest of the PCB. You first saturate the tip by next...
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Can I add my own flux to solder wick?
In a production or repair environment where the flux is specified and can’t be changed, or when an aqueous flux is needed, you can add your own flux to this type of braid. Unfluxed wick will not next...
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Is solder mask / resist / overcoat necessary?
Not always, but that depends on the design and end-use of the printed circuit board (PCB). Solder mask (also called resist and overcoat) is used to isolate conductive areas of the PCB by covering them next...
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Are PWR-4 cleaners good replacements for n-propyl bromide (nPB)?
Yes, PWR-4 high performance solvent cleaners are nonflammable, powerful cleaners like nPB, safer than nPB, and are also economically priced. next...
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How do you prevent the valve from clogging up when using aerosol conformal coating?
I suggest you get into the habit of clearing the valve after every use. You turn the can upside-down and spray until it only sprays propellant. If you don’t do that, you run the risk of dried coating next...
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