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Alpha EF-9301 liquid soldering flux – premium halogen-free, no-clean formulation for wave and selective soldering, delivering excellent hole-fill, minimal bridging, and high surface insulation resistance for advanced PCB assemblies.

  • Item Number: EF-9301

  • Manufacturer: MacDermid Alpha®

  • Flux Type/ Chemistry: Halogen-free, no-clean 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 EF-9301 Liquid Soldering Flux is a high-performance, no-clean flux formulated for both lead-free and tin-lead soldering processes. It ensures superior wetting, reliable solder joint formation, and minimal residues, providing consistent and high-quality performance in electronics assembly. The flux is optimized for precision applications, supporting fine-pitch components and high-density PCB assemblies.

2. Applications

EF-9301 is suitable for wave soldering, selective soldering, hand soldering, and rework operations. It is widely used in PCB assembly, repair, and rework processes where controlled and reliable soldering is essential. The flux performs effectively 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 preserve flux activity and shelf life

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