Stretch-stabilized ethylene stagnation flames are numerically simulated using the ABF mechanism to predict the PAH chemistry and obtain the soot characteristics, such as soot volume fraction and Particle Size Distribution Functions (PSDFs). The primary objective is to evaluate the mechanism’s reliability in simulating the soot PSDFs of stretch-stabilized flames and to study the impact of flame temperature and particle residence time on the soot characteristics. The computed soot volume fractions and PSDFs are compared with published experimental data on ethylene stretch-stabilized flames. Numerical simulation of stretch-stabilized stagnation flames enables to investigate the soot dynamics at higher temperatures. The estimated particle-size distribution functions’ distributions revealed a significant influence of residence time and temperature, suggesting that elevated temperatures limit the formation and growth of soot particles.