The single output ZPSA20 series of compact PCB-mountable 20-watt AC-DC power supplies accepts a wide input voltage range and has a low profile (0.79 inches) and industry standard footprint (2 inches× 3.5 inches). They are available with the most popular output voltages including 3.3, 5, 9, 12, 15, or 24 VDC. The outputs are floating so they can be used as either a positive or negative polarity. Typical efficiencies are up to 82%. These models are rated for operation in a convection cooled environment from 0°C up to 70°C with derating. A green LED is provided as an indicator that the power supply is on. Other standard features include overvoltage and short-circuit protection.