Electronic cigarette with optimised vaporisation with reduced droplet formation

A capsule for an electronic cigarette has a first end for engaging with an electronic cigarette device and a second end configured as a mouthpiece portion having a vapor outlet, the capsule further including a liquid store configured to contain a liquid to be vaporized, a vaporizing unit including a heater and a fluid transfer element, the vaporizing unit being arranged within a vaporizing chamber, a main vapor channel extending from the vaporizing chamber to the vapor outlet in the mouthpiece, and a housing enclosing the liquid store and the vaporizing unit, wherein the heater is a heating coil with a height corresponding to 25%-50% of the height of the fluid transfer element, wherein the power density of the heater is between 4000 and 7000 W/m2K, and the power density is between 1.10 to 2.350 Watt/mm2.