  Massive stars are known X-ray emitters and those belonging to the Be category
are no exception. One type of X-ray emission even appears specific to that
category, the gamma Cas phenomenon. Its actual incidence has been particularly
difficult to assess. Thanks to four semesters of sky survey data taken by SRG
(Spectrum Roentgen Gamma)/eROSITA, we revisit the question of the X-ray
properties of Be stars. Amongst a large catalog of Be stars, eROSITA achieved
170 detections (20% of sample), mostly corresponding to the earliest spectral
types and/or close objects. While X-ray luminosities show an uninterrupted
increasing trend with the X-ray-to-bolometric luminosity ratios, the X-ray
hardness was split between a large group of soft (and fainter on average)
sources and a smaller group of hard (and brighter on average) sources. The
latter category gathers at least 34 sources, nearly all displaying early
spectral types. Only a third of them were known before to display such X-ray
properties. The actual incidence of hard and bright X-rays amongst early-type
Be stars within 100--1000pc appears to be ~12%, which is far from negligible.
At the other extreme, no bright supersoft X-ray emission seem to be associated
to any of our targets.
