The Siproin H8118A40M5R is a DC-DC Converter in a SOT23-5 RoHS package. It is a step-up (boost) DC-DC converter with input voltage from 2.5 V to 6 V and output voltage from 3.3 V to 20 V. It has an efficiency of up to 92%, 5 mA startup current, and an operating temperature range from -40°C to +105°C. It has short circuit, over-temperature, and over-voltage protection, and an enable pin for soft-start. This device is suitable for applications such as battery-powered systems, portable electronics, medical equipment, and automotive applications.