SPB09 & DPB09 9W Regulated DC-DC Converters MEAN WELL SPB09 and DPB09 9W Regulated DC-DC Converters are 9W isolated module type DC-DC converters in a SIP-8 package. SPB09 and DBP09 feature international standard pins, high efficiency up to 89%, and a -40°C to +90°C operating temperature range. This MEAN WELL series also offers 1.5KVDC isolation and 9V-18V, 18V-36V, or 36V-72V 2:1 wide input ranges. Various output voltages are offered in the single- or dual-output versions. SPB09 and DPB09 serve a variety of applications, including industrial control, telecommunication, distributed power architecture, and more.