View mbrs120 datasheet:

Bulletin PD-20644 rev. B 03/02 MBRS120 SCHOTTKY RECTIFIER 1 Amp SMB Major Ratings and Characteristics Description/Features The MBRS120 surface-mount Schottky rectifier has been Characteristics MBRS120 Units designed for applications requiring low forward drop and small foot prints on PC boards. Typical applications are in disk drives, IF(AV) Rectangular 1.0 A switching power supplies, converters, free-wheeling diodes, waveform battery charging, and reverse battery protection. VRRM 20 V Small foot print, surface mountable Very low forward voltage drop IFSM @ tp= 5 µs sine 310 A High frequency operation Guard ring for enhanced ruggedness and long term VF @ 1.0Apk, TJ = 125°C 0.35 V reliability TJ range - 65 to 150 °C Device Marking: IR12 CATHODE ANODE 1 2 2.15 (.085)