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What is ROL0 Flux?

Published in Soldering Materials 2 mins read

ROL0 flux is a specific type of soldering flux characterized by its composition and activity level. Here's a breakdown:

Understanding Flux:

  • Flux is a crucial component in soldering, typically combined with solder wire or bar.
  • Its primary function is to cleanse and prime the metal surfaces being joined. This helps ensure a strong and reliable solder joint.

ROL0 Specifics:

  • RO stands for rosin. This indicates that the base material of the flux is rosin, a natural resin derived from pine trees.
  • L indicates low activity. This means the flux is designed for situations where a less aggressive cleaning action is required.
  • 0 signifies no detectable halides. Halides (like chlorides and bromides) can be corrosive if left on the circuit board so they are avoided for most applications.

ROL0 in Practice:

Feature Description
Base Material Rosin (natural resin)
Activity Low - suitable for easily solderable surfaces
Halides Halide-free - no detectable corrosive substances

Key Characteristics of ROL0:

  • Mild Cleaning: ROL0 is a low-activity flux, making it suitable for soldering on clean or easily solderable surfaces.
  • Non-Corrosive: The absence of halides ensures that the flux is non-corrosive, reducing the risk of damage to the circuit board or component.
  • Rosin-Based: As a rosin-based flux, ROL0 has good wetting and thermal stability properties during soldering.

Example:

A common application for ROL0 is in the manufacture of electronics, specifically those requiring delicate soldering and the prevention of corrosion issues, such as hand soldering through-hole components onto circuit boards.

Summary:

ROL0 flux is a halide-free, rosin-based solder flux with low activity, ideal for applications where a gentle cleaning action and corrosion prevention are required. It is important to select the correct type of flux for each soldering application to ensure high-quality and reliable connections.

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