The RB-1212D is a low-cost, 1W unregulated DC/DC converter designed for isolating or converting DC power rails in general purpose applications. It operates from a nominal 12VDC input (with a ±10% range) to provide a dual ±12VDC output at a current of ±42mA. Key features include a typical efficiency of 78-82%, a standard isolation of 1kVDC/1s (with a 2kVDC option available), and an operational temperature range of -40°C to +85°C. Housed in a compact SIP7 package, this converter is a reliable choice for applications requiring power rail isolation or voltage conversion without tight regulation.