Surface Mount Standard Diode, hot carrier diode, Current limiting diode circuit

  ZHCS1000 Series 1000 mA 40 V 100 uA High Current Schottky Barrier Diode - SOT-23

https://www.futureelectronics.com/p/semiconductors--discretes--diodes--schottky-diodes/zhcs1000ta-diodes-incorporated-2129437