PCSA1-S DC-DC Converters CUI Inc PCSA1-S DC-DC Converters come in an industry-standard SIP package with up to 1W isolated output and up to 82% efficiency. These DC-DC converters operate from 5VDC, 12VDC, and 24VDC nominal input voltages. CUI Inc PCSA1-S DC-DC Converters offer low ripple and noise and single unregulated output. The series features 1000VDC isolation voltage and an operating temperature range of -40°C to +100°C.