Global Standards for the Microelectronics Industry
saturation voltage, collector-emitter (VCE(sat))
The voltage between the collector and emitter terminals under conditions of base current or base-emitter voltage beyond which the collector current remains essentially constant as the base current or voltage is increased. (Ref. IEC 747‑7.)
NOTE This is the voltage between the collector and emitter terminals when both the base-emitter and base-collector junctions are forward-biased.
References:
JESD10#, 9/81
JESD77-B, 2/00