Small, lightweight, single-output 5- to 15-W AC-DC power supplies mount directly on a printed circuit board (PCB). Units come in three power levels and package sizes from 1.38 x 2.17 x 0.79 in. (5Wmodels) to 1.89 x 2.75 x 0.91 in. (15Wmodels). They are available in all commonly used output voltages from 3.3 to 24 V. All configurations accept a range of input voltages: 90 to 264 Vac, 47 to 440 Hz, or 110 to 370 Vdc.