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Kester 186-18 Flux Pen® is specifically designed for leaded and lead-free rework of conventional and surface-mount circuit board assemblies. Kester 186-18, under MIL-F-14256, was QPL approved as Type RMA. Although the fluxing ability approaches that of Type RA flux, residues after soldering are non-corrosive and non-conductive. Kester 186-18 has been developed for use in critical applications where difficult assemblies are to be soldered, but process requirements stipulate use of Type RMA flux. Kester 186-18 possesses high thermal stability for soldering multi-layer assemblies which require higher temperatures. Exposure to high pre-heat temperatures does not degrade solubility of the residue in normal cleaning solvents. There is no
surface insulation resistance degradation caused by the flux residue. The use of a minimum of ionic activating agents and the inactive nature of the residue permits leaving the residue on circuit board assemblies for many applications. The flux residue is also moisture and fungus resistant.
High thermal stability
Improves soldering performance
Eliminates the need and expense of cleaning
Classified as ROL0 per J-STD-004
Specific gravity: 0.831 &plusnm; 0.005
Percent solids (typical): 18
Acid number (typical): 55.5 mg KOH/g of flux
Shelf life: 2 years
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California residents: WARNING: This product contains, or when used for soldering and similar applications, produces chemicals known to the State of California to cause cancer and birth defects (or other reproductive harm).