An air suspension system is configured to adjust and maintain a desired vehicle ride height and spring rate. The conductive via extends vertically through less than a thickness of the substrate. The ferroelectric capacitor includes a first electrode adjacent the transistor, a second electrode remote from the transistor and a ferroelectric film therebetween. Raised features are present on the floor of the container for supporting a package placed within the compartment above any moisture that might be present on the floor. The impedance element may simply be a resistor. The method of manufacturing the poly-crystalline Si thin film includes forming an active layer formed of amorphous Si on a substrate, coating a gold nanorod on the active layer, and irradiating infrared rays onto the gold nanorod to crystallize the active layer.