The growing need for RF technology in the space industry has spurred significant advancements in piezoelectric MEMS FBAR resonators over the past two decades. The increasing demand for high-definition television (HDTV) and multimedia applications has heightened the performance requirements for communication satellites, which are also facing tighter financial and physical constraints. These evolving needs necessitate higher operating frequencies, greater flexibility, and increased miniaturisation of RF transponders. Innovations in 5G and advanced telecommunications further require RF filters capable of supporting new technologies while enduring the harsh conditions of space. MEMS resonators, developed as filters, meet these demands for high-speed wireless communication systems. Their high-quality RF MEMS capabilities, combined with controlled insertion loss and power consumption, are beneficial for RF filter development. Simulation results indicate that an FBAR1 resonator designed for 5G, with a quality factor of 3325, proves to be more reliable compared to an FBAR2 resonator with a quality factor of 1795. This paper compares FBAR performance based on area and investigates these parameters through simulation, aiming to highlight the significance of MEMS resonator characteristics for reliability evaluation in terms of the quality factor.