"Description:The R-78K-2.0 series is a switching regulator module that offers all the benefits of a switching regulator (high efficiency, wide input range, precise output voltage control) but at low production cost.
Due to its high efficiency of up to 96%, no heat sink is required and operation from -40 to 90°C is possible without reducing the output power.
The compact, TO-220-compatible SIP3 enclosure measures just 11.5 x 8.5 x 17.5 mm, saving valuable space on the circuit board.
Features:Up to 96% efficiency, no heat sinks requiredWide input voltage from 4.5 V to 36 V DCOperating temperature from -40 to +90°C without reductionPin-compatible with 78-series regulatorsNon-isolated DC/DC converterOvervoltage and short circuit protection"