Zinc antimonide (ZnSb), (Zn3Sb2), (Zn4Sb3) is an inorganic chemical compound. The Zn-Sb system contains six intermetallics. Like indium antimonide, aluminium antimonide, and gallium antimonide, it is a semiconducting intermetallic compound. It is used in transistors, infrared detectors and thermal imagers, as well as magnetoresistive devices.