The plasma synthetic jet actuator is a plasma actuator consisting of an annular elec-trode array separated by dielectric material, with a larger electrode that is exposed to the atmosphere and a smaller electrode embedded on a surface. Under input of high voltage, high frequency AC or pulsed DC, a region of plasma is formed starting from the toroidal edge of the outer electrode. This plasma renders the surrounding air in the form of a round synthetic jet and pulsatile operation of the actuator results in the production of multiple three-dimensional vortical structures. In quiescent conditions, the flowfield consists of a primary vortex ring that advects ahead of the jet and spatially fixed secondary vortical structures formed on account of plasma induced boundary layer entrainment near the in-ner edge of the outer electrode. The peak velocity and momentum of the plasma synthetic jet are found to be strongly affected by a combination of factors, including the input power, pulsing frequency, embedded electrode diameter and plasma morphology. The formation of the plasma synthetic jet and scaling of the jet characteristics with respect to the above variables is investigated in this paper. A simple analytical scaling model is derived starting from fundamental fluid dynamics principles. The relations obtained from the above model are compared with results from experiments for validation.