View mbrs340tr datasheet:

Bulletin PD-20585 rev. B 02/02 MBRS340TR SCHOTTKY RECTIFIER 3 Amp SMC Major Ratings and Characteristics Description/Features The MBRS340TR surface-mount Schottky rectifier has been Characteristics Value Units designed for applications requiring low forward drop and small foot prints on PC boards. Typical applications are in disk drives, IF(AV) Rectangular 3.0 A switching power supplies, converters, free-wheeling diodes, waveform battery charging, and reverse battery protection. VRRM 40 V Small foot print, surface mountable Very low forward voltage drop IFSM @ t p= 5 µs sine 1580 A High frequency operation Guard ring for enhanced ruggedness and long term reliability VF @ 3.0 Apk, TJ = 125°C 0.43 V TJ range - 55 to 150 °C Device Marking: IR34 2.75 (.108) 5.59 (.220) 3