A combination of flux, temperature and process cycles can result in the degradation of the
standard Durostone® grades of material.
The solution is Durostone® CFR767 which has been specifically formulated for use with
aggressive fluxes and high process temperatures.
The resin used to produce Durostone® CFR767 can withstand temperatures up to 320°C.
The decision to use Durostone® CFR767 over one of the standard grades is made when the
solder bath temperature exceeds 265°C and the bottom side PCB pre-heat exceeds 140°C.
Durostone® CFR767 has excellent flux resistance. When fluxes containing halides or dicarboxylic
acids are used in high volume production the lifespan of the standard grades of material can be
reduced so Durostone® CFR767 is an ideal solution.