SW-826A Ultra Pure Microfiber Swab

Product Overview

The SW-826A is an ultra-pure microfiber swab with a precision-woven ultra-pure microfiber head that has undergone rigorous purification processing to eliminate ionic contaminants, organic residues, and particulate matter from the fiber matrix before packaging — designed for cleaning tasks in semiconductor manufacturing, precision optics, and biomedical research environments where the swab itself is a potential source of process contamination that must be controlled to a higher standard than standard polyester swabs can meet.

The swab head measures 10mm in length, 3.2mm in width, and 1.5mm in thickness. The flat, narrow profile suits point-contact cleaning tasks: accessing the active area of optical sensors, cleaning fiber optic connector end-faces, wiping individual bond pad sites on semiconductor substrates, and removing contamination from precision instrument contact points where the cleaning target area is small and the surrounding surfaces are sensitive to any solvent or fiber contact. The ultra-fine microfiber structure generates extremely low particle counts during wiping, supporting compliance with ISO Class 4–5 cleanroom cleanliness standards where particle limits at 0.1μm are actively controlled.

Ultra-Pure Processing & Ionic Contamination Control

The purification process applied to SW-826A microfiber removes sodium, potassium, chlorine, and other ionic species from the fiber surface that would otherwise be transferred to cleaned substrates during contact. In semiconductor fabrication, ionic contamination on wafer surfaces directly affects MOS transistor threshold voltage stability and increases leakage current in completed devices — a failure mode traceable to contamination introduced by cleaning tools used in earlier process steps. The ultra-pure microfiber construction addresses this by reducing extractable ionic content to a level compatible with wafer-level and die-level cleaning procedures.

The fiber also exhibits low non-volatile residue (NVR) after solvent evaporation, meaning that no chemical film from the swab material deposits on optical surfaces or semiconductor substrates after IPA or cleaning solvent dries. The polypropylene handle is 70mm in total length with 2.2mm width and thickness, manufactured from environmentally compatible material. Package contains 100 pieces in small packs, 500 pieces in large packs.

Industry Applications & Use Scenarios

The SW-826A is applied in semiconductor manufacturing, precision optics production, biomedical research, pharmaceutical cleanroom operations, and analytical laboratory environments where contamination from the cleaning tool itself is a controlled process variable. Specific use scenarios include cleaning bond pad sites on semiconductor wafers before wire bonding, wiping fiber optic connector end-faces before splicing or insertion loss measurement, removing particulate from precision optical filter surfaces, cleaning biomedical instrument contact surfaces between sample analyses, and performing surface preparation on precision optical components before anti-reflective coating deposition. The ultra-pure microfiber construction makes it the appropriate choice when the application environment specifies low ionic contamination and low NVR as explicit performance requirements rather than general preferences.