HASL Precleaner SLTM is a powerful, non-foaming, free rinsing, alkaline cleaner specifically designed to clean copper prior to HASL or alternative finishes. It will remove solder mask developer scum, oven baked oxidation and residues, fingerprints, and oils. HASL Precleaner SLTM will not etch copper nor will it damage the. HASL Precleaner SLTM can be used in conjunction with a light microetch or acid cleaner. If an acid cleaner is used, MicroCleanTM ZE is preferred. If a microetch is used, much lower levels of metal removal are fully acceptable, thus minimizing costs and reject rate. Because of the potent cleaning agents that destroy organo-metallic compounds (such as insoluble copper/soldermask compounds) present on the copper surfaces, use of HASL Precleaner SLTM will reduce the requirement for a second pass through the HASL.

A one-part concentrate (40% potassium carbonate) formulated to develop fully aqueous dry film photoresists. DX-40 is economical to use and easy to handle, eliminating the need to weigh and dissolve powdered materials. It contains a unique blend of ingredients to enhance the loading capacity of the solution and help keep the equipment clean. These special ingredients help ensure straight sidewalls and will help clean the foot” of underdeveloped polymer. These features result in greater productivity and less down time. DX-40 also works well for developing aqueous photoimageable solder masks or for any other situation where carbonate is used. “” one-part concentrate (40% potassium carbonate) formulated to develop fully aqueous dry film photoresists. DX-40 is economical to use and easy to handle