Alpha HF-850
Alpha HF-850 is a premium, halogen-free / halide-free flux-cored solder wire designed for no-clean soldering applications. It delivers very fast wetting, low spatter, and clear, non-tacky flux residues, producing clean, reliable solder joints with excellent mechanical and electrical integrity. Its halogen-free formulation meets stringent environmental and safety standards, making it ideal for modern electronics
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Feature
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Specification / Detail
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Product Type
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Halogen-Free / Halide-Free flux-cored solder wire (no-clean)
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Alloy Options
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Multiple alloys available (depending on batch), including SAC305 (Sn96.5/Ag3.0/Cu0.5), SACX® Plus 0307, Sn99.3/Cu0.7, InnoLot (proprietary), and even Sn63/Pb37 for legacy applications.
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Melting / Liquidus Temperature (depending on alloy)
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• SAC305: ~ 217–221 °C
• Sn99.3/Cu0.7: ~ 227 °C
• Sn63/Pb37: ~ 183 °C (eutectic)
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Flux Core
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No-clean flux (halogen-free / halide-free)
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Flux Classification / Cleanliness Standard
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Compliant with IPC J-STD-004 (ROL0) — low halide content (< 500 ppm halides)
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Physical Properties
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Rosin softening point: ~70–80 °C; Acid value: 180–200 mg KOH/g flux.
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Shelf Life & Storage Conditions
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Shelf life up to 36 months when stored at 0–40 °C.
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Key Performance Traits
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Very fast wetting & flow, low flux spatter, low fumes, clean non-tacky residues, good solder joint appearance, high first-pass yield (> 80%) on spread tests.
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Typical Uses / Applications
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Manual soldering, rework, board-level assembly, connector soldering, LED board-to-board, high-density PCBs, automotive, consumer electronics, mobile devices, general no-clean soldering tasks.
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