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Selective Wave Soldering
Selective wave soldering is a soldering process used in printed circuit board (PCB) assembly. It’s a variant of the more common wave soldering process, which involves passing an entire PCB over a bath of molten solder to create solder joints.
How Selective Wave Soldering Works?
In selective wave soldering, only specific areas of the PCB are exposed to the solder wave, allowing for precise control over where the solder is applied. This is particularly useful for PCBs that have a mix of surface-mount (SMT) and through-hole components.
Here’s how selective wave soldering works:
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Preparation: The PCB is first prepared by applying solder paste to the areas where through-hole components will be mounted. This is done using a stencil or a dispenser.
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Component Placement: Both surface-mount and through-hole components are placed on the PCB using automated pick-and-place machines.
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Selective Soldering: The PCB is then passed over a selective solder wave, which is a controlled flow of molten solder. This wave only contacts the areas where solder paste has been applied.
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Solder Joint Formation: The molten solder forms solder joints by adhering to the exposed component leads and the pads on the PCB.
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Cooling and Solidification: The PCB is then moved through a cooling zone where the solder solidifies.
Need Selective Wave Soldering For Your Projects?
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Soldering Provides Several Advantages
Precise Control: Allows for precise soldering of specific components without affecting others.
Reduced Heat Exposure: Since only selected areas are soldered, sensitive components or areas with high thermal sensitivity are protected.
Mixed Technology Boards: Ideal for PCBs with a combination of surface-mount and through-hole components.
Reduced Flux Residue: With precise application, there’s typically less flux residue to clean.
Cost-Efficiency: Can be more cost-effective than hand-soldering of through-hole components.