AL1B is a standard avalanche SMD rectifier diode designed for 50/60 Hz mains rectification, power supplies, and polarity protection applications. It features a repetitive peak reverse voltage (VRRM) of 100 V and a reverse avalanche breakdown voltage (VRSM) greater than 150 V at 1 mA, with controlled avalanche characteristics for enhanced reliability. The diode is housed in a DO-213AA (Mini MELF) plastic package compatible with SOD-87, and is marked with a red cathode ring for identification. Key electrical characteristics include a maximum average forward current of 1 A at 75°C, forward voltage less than 1.2 V at 1 A, leakage current less than 3 µA at 25°C, and typical reverse recovery time of 1500 ns. The device operates over a junction temperature range of -50°C to +175°C and is compliant with RoHS (exemption 7a), REACH, and Conflict Minerals regulations, making it suitable for industrial and commercial applications requiring reliable rectification and protection.