LUOWEI LW-223 Lead-Free Zero Resistance Flux Paste 100g

LUOWEI LW-223 Lead-Free Zero Resistance Flux Paste 100g

The LUOWEI LW-223 is a high-performance, lead-free flux paste specifically engineered for precision BGA, PGA, and SMD rework. It is popularized in the electronics repair industry for its “zero-resistance” and “non-conductive” properties, which ensure that leftover residue does not interfere with delicate high-frequency signals, such as those in mobile smartphones.

Below are the full specifications for the 100g container.

LUOWEI LW-223 Technical Specifications

Key Performance Features

• Zero Resistance Technology: Designed to eliminate electrical interference. Unlike lower-quality fluxes, the residue of LW-223 has such high resistance that it behaves like an insulator, making it safe for RF and logic circuits.

   

• High Activity, Low Smoke: It efficiently removes oxide films from pads and components to facilitate fast “wetting” (the spread of solder) while producing minimal fumes.

   

• Automatic Alignment: The high viscosity and surface tension properties help tiny BGA components “self-align” during the reflow process.

• No-Clean Formula: The residue left after soldering is chemically stable and non-tacky. While it can be cleaned with IPA (Isopropyl Alcohol), it is not required for the functional integrity of the board.

   

Usage Tips

1. Ventilation: Even though it is a “low smoke” formula, always use a smoke absorber or work in a well-ventilated area to avoid inhaling rosin vapors.

2. Cleaning: If you prefer a pristine look for a customer’s device, use a high-purity IPA and a specialized ESD brush to remove the pale residue.