The Comchip Technology 1031949-CZRF52C5V1-HF is a zener diode with a voltage rating of 5.1V and a maximum power dissipation of 200mW. It has a forward voltage of 900mV at 10mA and a reverse leakage current of 100nA at 800mV. The diode is designed for use in discrete semiconductor products and is mounted using SMD (SMT) technology. It has a tolerance of ±5% and an impedance of 60 Ohm. The temperature range for operation is -55°C to 125°C, making it suitable for use in a wide range of applications. The diode is packaged in a 1005/SOD-323F case and is available in a reel of 4k pcs.