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Alpha NR205 liquid soldering flux – engineered for selective and wave soldering, providing excellent wetting, reliable hole-fill, and very low residues, ensuring high insulation resistance and durable solder joints for demanding PCB assemblies.

  • Item Number: NR205

  • Manufacturer: MacDermid Alpha®

  • Flux Type/ Chemistry: No-clean, halogen-free liquid flux

  • Viscosity/ Form: Low viscosity liquid

  • Activity/ Classification: IPC J-STD-004 classification ROL0

  • Packaging: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details.

1. Product Overview

Alpha NR205 Liquid Soldering Flux is a high-performance, no-clean flux designed for both lead-free and tin-lead soldering applications. It provides superior wetting, consistent solder joint formation, and minimal residues, ensuring reliable performance in electronics assembly. The flux formulation supports fine-pitch components and high-density PCB assemblies, offering precision and repeatability in soldering operations.

2. Applications

NR205 is suitable for wave soldering, selective soldering, hand soldering, and rework processes. It is widely used in PCB assembly, repair, and high-density electronics manufacturing where accurate and consistent soldering is critical. The flux ensures reliable results in both automated and manual soldering methods.

3. Typical Properties – Specifications

  • Flux Type: No-clean, mildly activated

  • Form: Liquid

  • Halogen Content: Halogen-free

  • Residues: Minimal, non-corrosive, compatible with no-clean processes

  • Compatibility: Works with both lead-free and tin-lead solder alloys

  • Activation: Provides consistent wetting and reliable solder joints

  • Storage: Store in a cool, sealed container to maintain activity and shelf life

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