The piezoelectric ceramic is the highest cost component in bender transducers, which are critical elements in sonobuoys and future dipping sonars used on Unmanned Surface Vehicles (USVs) and Unmanned Aerial Vehicles (UAVs). Given the growing demand for cost-effective and efficient sonar systems in these platforms, reducing the overall transducer cost without compromising performance is a vital objective. This research addresses this pressing need by innovating on existing bender transducer designs. Traditional two-ceramic bender transducers, while effective, contribute significantly to the product cost, weight, and environmental impact due to their higher lead content and manufacturing waste. The challenge lies in developing a design that can maintain acoustic performance while reducing cost, weight, and environmental footprint. This paper presents a patented bender design that uses a single piezoelectric ceramic to function as a two-ceramic bender. The design methodology involved optimizing the transducer geometry and electrical configuration to maximize performance. A comprehensive development process was undertaken, including prototype fabrication, iterative testing, and validation through full qualification. The resulting array of benders demonstrated performance comparable to that of traditional two-ceramic bender arrays while achieving significant reductions in cost and weight. Additionally, the new design substantially lowers the lead content in the product and reduces lead-related waste during manufacturing processes. These improvements collectively enhance the environmental sustainability and manufacturability of the transducers. This innovation has meaningful implications to produce sonar transducers in defence and commercial sectors where cost, weight, and environmental considerations are increasingly critical. By reducing material costs and environmental impact without sacrificing performance, this design supports more affordable and sustainable sonar deployments on USVs, UAVs, and other platforms.