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Small white tube of rosin flux paste labelled KL-558

KELLYSHUN KL-558 Soldering Flux Paste 5ML

SKU CH-4GY3-09GCJ MPN KL-558

No-clean rosin flux paste removes oxides for reliable PCB and SMD soldering joints

  • Compatibility/FitmentKL-558, KL-558 Solder Flux
  • Standards/Certificationsrosin
  • Lead-free and halogen-free for safer electronics work
  • High-activity rosin removes oxidation from welding surfaces easily
  • Pushing-type design gives smoother flow with no waste during soldering
  • No-clean formula leaves no residue on PCBs and components
  • Suitable for PCB, SMD, SMT and precision device repair

Product Identity

The KELLYSHUN KL-558 is a 5ML rosin-based soldering flux paste designed for electronics repair and assembly. It is formulated as a no-clean, lead-free, and halogen-free compound that is non-corrosive to components. The pushing-type dispenser allows controlled application to minimise waste during soldering tasks.

Suitability

This flux suits technicians and hobbyists working on PCB, SMD, SMT, mobile phone, home appliance, and meter repairs who need a high-activity rosin to remove oxidation quickly. It is not intended for buyers who require a water-soluble flux that must be washed off after soldering, nor for applications demanding an activated flux with chloride or bromide content for heavy industrial joints.

Capacity and Headroom

The 5ML volume provides enough material for numerous small to medium repair sessions on circuit boards and surface-mount components. The high-activity rosin comfortably handles standard oxidation on copper pads and component leads, delivering good flow and wetting performance. It reaches its limit when tackling heavily oxidised or contaminated surfaces that would require a more aggressive chemical activator or mechanical cleaning before flux application.

Highlights

  • Lead-free and halogen-free for safer electronics work
  • High-activity rosin removes oxidation from welding surfaces easily
  • Pushing-type design gives smoother flow with no waste during soldering
  • No-clean formula leaves no residue on PCBs and components
  • Suitable for PCB, SMD, SMT and precision device repair

Specifications

Compatibility/FitmentKL-558, KL-558 Solder Flux
Standards/Certificationsrosin

Questions about this item

What type of soldering iron tip works with the KL-558 rosin flux paste?

The KL-558 flux works with standard soldering iron tips used for electronics; its rosin base activates at normal soldering temperatures for PCB, SMD and SMT work.

Can I use the KL-558 flux with older lead-based solder wire?

Yes, the KL-558 rosin flux is compatible with both lead-free and traditional lead-based solder alloys for electronic repairs.

How do I know the KL-558 flux is performing correctly during a joint?

The milky white paste should melt smoothly, remove oxidation quickly and leave a clean, shiny joint with minimal non-corrosive residue.

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