TDK-Lambda have introduced a new range of PCB-mounted mains power supplies which feature a wide input voltage range and are mounted in a flame retardant (to UL94V-0) resin case.
The input voltage can range from 90 to 305 VAC with a frequency range of 47 to 440 Hz. This makes them suitable for operation with mains supplies rated at 115, 230 or 277 VAC.

The power supply modules achieve a primary to secondary insulation voltage of 3,000 VAC and are designed for operation without a protective earth connection according to protection class II. They are therefore ideal for providing a DC supply to low-power devices requiring 2 or 4W or as an auxiliary power supply requiring equivalent power. The modules are available in 2 or 4W versions and measure just 28.5 x 25.8 x 17 mm (2 W) or 37 x 27.5 x 17.5 mm (4 W). The available output voltages are 3.3, 5, 8, 9, 12, 14, 15 and 24 V.

The KAS2 series supplies 2 W with an operating temperature range of -40 to +60 °C, while the 4 W series KAS4 operates in the temperature range of -40 to 50 °C without the need for additional ventilation. Power consumption at idle is ≤0.3 W which makes them ErP compliant. Input to the supply should be protected using an external fuse, varistor and thermistor. All models comply with EN 55024 and EN 55032-B (grade B interference is achieved with the addition of a small capacitor).