Updated version of Fig. 4 from Schaffenroth et al. (2014b) adding the HW Vir systems published since then (see Schaffenroth et al. 2018, for a table of the parameters of all published HW Vir systems). Shown are the RV semi-amplitudes of all known sdB binaries with reflection effects and spectroscopic solutions plotted against their orbital periods. Blue squares mark eclipsing sdB binaries of HW Vir type where the companion mass is well constrained and red circles show systems without eclipses, where only lower limits can be derived for the companion masses. The dashed lines mark the regions to the right where the minimum companion masses derived from the binary mass function (assuming 0.47 M_⊙ for the sdBs) exceed 0.01 M_⊙ (lower curve) and 0.08 M_⊙ (upper curve).