BAS21H Series 250 V 200 mA Surface Mount Switching Diode - SOD-323, High-speed switch, switch low resistance, high-speed switch, fast switching diode, Pin diode switch, switching diode, Diode switch, RF switches, NPN transistor https://www.futureelectronics.com/p/semiconductors--discretes--diodes--switching/bas21ht1g-onsemi-5159711