Qualitek Delta 381 is a No Clean halide-free flux designed for both wave soldering and surface mount board assembly applications. The low solids content of 381 flux results in virtually no residue remaining on the boards after soldering. 381 No Clean flux may be used with both high temperature Lead-Free and Sn-Pb soldering processes. 381 flux has been designed to improve soldering performance by minimizing bridging and other solder defects.
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