Water-soluble flux provides good soldering results because they have good flux activity. They have good wetting action (ability to remove oxides and prepare a clean surface for soldering). However, they may be too aggressive, calling for extra precaution during cleaning of the PCB Assemblies to ...
The design of fluxes for a selective soldering application poses unique problems due to the localization of the soldering process. Both the heat treatment and the scrubbing action of the flux residue by the solder wave are confined in the soldered area. To address this specific issue, the flux...
The design of fluxes for a selective soldering application poses unique problems due to the localization of the soldering process. Both the heat treatment and the scrubbing action of the flux residue by the solder wave are confined in th... BRUNO TOLLA,DENIS JEAN,XIANG WEI - 《Printed Circuit...
The selective soldering application requires a combination of performance attributes that traditional liquid fluxes designed for wave soldering applications cannot fulfill. First, the flux deposition on the board needs to be carefully controlled. Proper fine tuning of the flux physicochemical characteristics ...
1) Different welding methods require different states of flux. Liquid flux should be used for wave soldering and paste flux should be used for reflow soldering. 2) When the welding object has good solderability, it is not necessary to use a highly active flux; but when the welding object ha...
Most beliefs about soldering originated during this era of reflow. One such belief, which has disastrous consequences today, says that liquid flux should not be used during hand soldering. The belief is that the flux contained in wire solder is sufficient to do the job. While that can be tru...
The main materials that need to be prepared to make solder paste include tin powder, flux and substrate. Among them, tin powder is the main ingredient, while flux and substrate are auxiliary ingredients, which can improve the soldering quality and processability. ...
Soft soldering is a technique used to join wires, fix electronic components onto circuit boards and bond copper pipes together. This tutorial shows you how to solder step by step.
The type of flux to be used in soldering depends on various factors such asType of PCBto be assembled, type of electronic components used, type of soldering machine and equipments used and the working environment. 2. Solder (Wire, Bar, Paste, Balls, Preforms) ...
On the other hand, if thesoldering pastestays long enough on the circuit during the process of reflow, the excess time may tire out the PCB flux before the process of soldering. However, if PCB flux turns inactive due to the excess soak time, then it rises the non-wetting subsequently. ...