Ferroelectric glass-ceramics of composition 0.90 (Ba 0.7 Sr 0.3 ) TiO 3 -0.10(B 2 O 3 :SiO 2 ) (0.90 BST:0.10 BS) synthesized by sol-gel method have been used for the preparation of dielectric thick-film inks. The particle dispersion of the glass-ceramic powders in the thick-film ink formulations have been studied through rheological measurements for fabricating thick-film capacitors by screen printing technique. The thick films derived from such glass-ceramics are found to sinter at considerably lower temperatures than the pure ceramic, and exhibit good dielectric characteristics with a tunability of 32% at 1 MHz under a dc bias field of 35 kV/cm.