The potential of CaSnO3 (calcium metastannate) for its application as a capacitor component possessing small temperature coefficient of capacitance (TCC) in electrical systems, is examined via the ac small-signal measurements. The ac electrical data were acquired on these samples sintered at various combinations of temperature-time frames (1200 degrees C less than or equal to T less than or equal to 1350 degrees C; 24 h less than or equal to t less than or equal to 60 h) in the frequency range from 5 Hz to 13 MHz. The measurements were carried out over the temperature range 25-300 degrees C. The electrical response was found to exhibit relaxation processes in more than one complex plane formalism in a simultaneous fashion. The resistance of the sintered samples was dominated by the grain boundaries. The capacitance showed almost linear behavior in this measurement temperature range. The resulting electrical behavior has been discussed with the evolved microstructure in the sintered bodies.