WF-9958 Wave Solder Flux is an updated version of Indium’s best-selling WF-9942. It was designed to conform to the more rigorous standards of J-STD-004B and is designated as ORM0. It has no intentionally added halogens, no rosin, and exhibits exceptional hole fill as well as pin-testing performance that can only be achieved with a rosin-free material. In addition to exhibiting excellent soldering performance on a wide range of board finishes and board types, WF-9958 also passes the updated and more rigorous reliability requirements of J-STD-004B tests for Surface Insulation Resistance (SIR) and Electromigration (ECM).
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