The RF4 HX-50 is a premium, no-clean rosin flux paste designed for high-quality PCB assembly, SMD soldering, and BGA rework. Featuring a neutral pH and a stable, slow-evaporating formula, it leaves behind minimal, non-corrosive residue, eliminating the need for post-soldering cleaning in most applications. Housed in a compact 50g container, it's the perfect consumable for any professional repair bench or electronics workshop.

Key Features

1. No-Clean, Non-Corrosive Formula – The high-purity rosin flux activates at soldering temperatures to remove oxides, then leaves behind a benign, non-conductive residue that is safe to leave on the board, eliminating a time-consuming cleaning step.
2. Neutral pH (7±0.3) – The balanced, neutral pH formula is entirely safe for sensitive electronic components, including ICs and printed circuit boards (PCBs), preventing any risk of long-term corrosion or damage.
3. Excellent Solderability & Wetting – Formulated for high-quality surface mount technology (SMT) assembly, it significantly improves solder joint quality, adhesion, and flow, providing strong, durable, and reliable connections.
4. Excellent for BGA & SMD Rework – This tacky flux is ideal for holding larger components in place during reflow, making it a versatile choice for both manual soldering and advanced board-level repairs.
5. High Purity & Long Shelf Life – The high-purity components ensure that the paste will not deteriorate, dry out, or degrade over time, offering a long shelf life and consistent performance whenever you need it.