The MC1403 is a DIP-8 RoHS Voltage Reference manufactured by HGSEMI. It is a four-terminal IC that produces two voltage references, with a nominal output voltage of 1.25V and 4.09V respectively. The MC1403 has a temperature coefficient of ±5ppm/°C, a maximum total output error of 0.2%, an operating temperature range of -40°C to +125°C, an input voltage range of 4.5V to 40V, and an output current (source) of 11mA. It also includes current limiting and thermal protection circuits to help protect the device from damage due to overloads. The MC1403 is suitable for a variety of applications, such as portable equipment, communication systems, power supplies, and motor control systems.