What types of SMT cleaning machines are available and which one is right for your factory?

Detailed Explanation

SMT cleaning machines remove flux residues, solder balls, and other contaminants from assembled PCBs. The choice depends on your flux type, environmental compliance needs, and production volume. (1) Aqueous cleaning machines use deionized water with saponifiers — they are environmentally friendly and effective on water-soluble fluxes, but require a drying stage and wastewater treatment. (2) Solvent cleaning machines use engineered solvents — they offer fast drying and excellent cleaning on no-clean and RMA fluxes but require proper ventilation and solvent management. (3) Semi-aqueous systems combine a solvent stage with a water rinse stage — offering the best of both approaches. (4) Ultrasonic cleaners use high-frequency sound waves in cleaning fluid to remove contaminants from hard-to-reach areas under components — they're highly effective but must be carefully controlled to avoid component damage. (5) Centrifugal/inline cleaning systems are designed for high-volume production with throughput of up to 500 boards per hour. Samtronik offers all five types with the patented dual-circulation filtration system that extends bath life.