Do all/most SOIC chips whitstand the 235 degrees C for reflow soldering?
Any reputable device in their datasheet will have (in case you are not familiar) a "Solder profile" that indicates not only the peak temperature, but also the ramp-up temperature rate, dwell temperature rate and cool-down temperature rate. Make sure your manufacturer adheres to this solder profile and you should be good. Violations of this soldering profile, which I have seen personally for LEDs, actually desoldered the internal binding wires from the LED die. So yes, the LED is on the board, but it is not guaranteed to work (because we were not following the solder profile).