Mean Well SKMW15 and DKMW15 15W Regulated DC Converters
Available from Mouser Electronics, these coil converters measure 25.5 x 25.4 mm and can operate with input voltages from 9 to 36V or 18 V to 75V. The output voltage can be 3.3V, 5V, 12V or 15V for single output and 5, 12 or 15V symmetrical.