Tdk lambda zpsa20 series 20w open frame switch mode power supplies tdk lambda zpsa 20 5 a 5v 20w open frame switch mode power supply that features a wide range universal input low profile and industry standard footprint suitable applications include videoaudio routers datacomm point of sale test and measurement led signage and lighting tdk lambda zpsa 20 5 20w open frame power supply 5v 44a