Edsyn no clean smd solder paste edsyn cr11 p this edsyn cr11 solder paste is a high quality product ideal for all smd applications even the most sensitive components can be soldered at a working temperature of 215 to 260 deg c the melting point in the solder joint is 138 deg c p p flux composition is synthetic and corresponds to f sw32 din en 29454 1 2 3 the flux is completely halogen free and suitable for fine pitch applications giving faultless soldering results when using either