View czrt5221b-thru-czrt5267b datasheet:

COMCHIP SMD Zener Diode SMD Diodes Specialist CZRT5221B-HF Thru CZRT5267B-HF Voltage: 2.4 to 39 Volts Power: 350 mWatts RoHS Device Features SOT-23 Halogen free. 0.119(3.00) Planar die construction 0.110(2.80) 350mW power dissipation on FR-4 PCB 3 0.056(1.40) Ideally suited for automated assembly 0.047(1.20) process 1 2 General purpose, medium current 0.079(2.00) 0.071(1.80) Mechanical data 0.006(0.15) Case: SOT-23, Molded plastic 0.002(0.05) 0.041(1.05) Terminals: Solderable per MIL-STD- 0.100(2.55) 0.035(0.90) 0.089(2.25) 202G,method 208 Polarity: See diagram below 0.004(0.10) max Mounting position: Any 0.020(0.50) 0.008(0.20) min 0.012(0.30) Marking: see table on page2 Weight: 0.0078 gram(approx.). Dimensions in inches and (millimeter)