R-78B-2.0 DC/DC Converters RECOM Power R-78B-2.0 series DC/DC Converters are high-current voltage regulators. The 2A, SIP3, single output converters offer efficiency up to 96% and no heatsinks are required. Other features include a wide operating temperature range of -40°C to +70°C at full power. RECOM R-78B-2.0 series offers S/C and over-temperature protection and is pin-compatible with TO220 linear regulators.