[en] The effects of dwell sintering time on the densification and microwave dielectric properties of Sr_0.5Ca_0.5La₄Ti₅O₁₇ ceramic were investigated. The ceramic was fabricated using the conventional solid-state mixed oxide route using high-purity raw materials which was characterized using X-ray diffraction, scanning electron microscopy and vector network analyzer for phase, microstructure and microwave dielectric properties analysis, respectively. The XRD findings showed single-phase ceramics for all sintered samples. The microstructure was observed to be comprised of compacted elongated plate like grains. The grain size was observed to increase with increase in sintering time from 2 to 7 h. Abnormal grain growth is observed for sintering time > 5 h. Thus, the dwell sintering times effected the density, and hence the microwave dielectric properties of Sr_0.5Ca_0.5La₄Ti₅O₁₇ ceramic. ε_r ~ 57.1, Q_uf_o ~ 13,250 GHz and τ_f ~ 5.1 ppm/°C were obtained for Sr_0.5Ca_0.5La₄Ti₅O₁₇ ceramic sintered at 1550 °C for 5 h in the present study.