Aquanox® A4241 is an innovative aqueous cleaning solution for printed circuit board (PCB) cleaning and stencil cleaning is designed to be effective on the toughest soils while protecting even the most sensitive parts in electronic assemblies from etch or darkening. A4241 is safe for multiple types of metal materials used in Printed Circuit Board (PCB) Cleaning and Stencil Cleaning including bare aluminum and copper.
Aquanox A4241 is a batch cleaning product specifically designed to remove reflowed flux residues and uncured wet solder paste from populated printed circuit assemblies. The A4241 product design is built to perform these two aqueous electronic assembly cleaning tasks with a single product.
A4241 is effective at cleaning most lead-free and tin-lead no-clean, rosin-based, and water-soluble reflowed flux residues on printed circuit board production assemblies. Aquanox A4241 is functional in spray-in-air and spray-under-immersion, and ultrasonic cleaning machines. Aquanox A4241 is formulated as a concentrate with concentration levels being dependent on the soil type and level of impingement energy applied by the cleaning machine. In most applications, A4241 mixture in water ranges from 15-25% with wash times ranging from 5-20 minutes.
During the electronic assembly process, a small percentage of printed circuit cards are rejected due to solder paste being out of alignment during the solder paste printing process. Aquanox A4241 functions as an aqueous product that cleans both wet solder paste and reflowed flux residues that are common when a misprint arises. As such, A4241 finds applications in multifunctional stencil cleaning machines used for both stencil and printed circuit board cleaning.
Aquanox A4241 is engineered with a mixture of oxygenated and polar organic reactive solvents. Functional additives are added to protect metallic surfaces from chemical attack, surface tension reduction to improve wetting and penetration under low gap components, and reduce foam propagation. The combined features engineered into A4241 make for a highly effective batch and stencil cleaning product. Aquanox A4241 is low in odor and contains no hazardous materials. This product has a wide material compatibility window on boards, components, labels and metallic surfaces.