The KAS series ac-dc power supplies is rated at 2 and 4 W. Accepting 90 to 305-Vac, 47-440-Hz inputs, these board-mounted converters will operate from 115, 230 and 277-V nominal inputs. Target applications include security systems, building automation, professional household appliances, portable equipment and products requiring a separate standby voltage.
The series has a double-insulated Class II construction, requiring no earth ground connection and has a 3-kVac primary-to-secondary isolation. Available output voltages are 3.3, 5, 8, 9, 12, 14, 15 and 24 V and no-load power consumption is less than 300 mW. The KAS units are encapsulated in a plastic-resin fiberglas sproviding additional protection against shock and vibration. The 2-W KAS2 measures 28.5×25.8×17.0 mm and the 4-W KAS4 37×27.5×17.5 mm.
The KAS2 will operate in ambient temperatures of -40 to +80°C, derating linearly to 40% load above 60°C. The KAS4 has a temperature range of up to -40 to +70°C, with model-dependent derating. All the power supplies are certified to IEC/EN/UL/CSA 60950-1 and are designed to meet IEC/EN 60335-1 with CE marking for the Low Voltage and RoHS2 Directives. The series is compliant to EN 55032-B (radiated and conducted) and will meet EN 55024 immunity standards with an external varistor.
More information: TDK-Lambda Americas, http://www.us.tdk-lambda.com/lp/products/kas-series.htm, 800-LAMBDA-4.