View czrh3-55c-series datasheet:

 SMD Zener Diodes SMD Diodes SpeciaIist CZRH3-55C2V4-G Thru CZRH3-55C39-G VoItage: 2.4 to 39 VoIts Power: 150 mWatts RoHS Device Features SOT-523 -Planar die construction. 0.067(1.70) -150mW power dissipation. 0.059(1.50) -Ultra small surface mount package. 3 -Lead free/RoHS compliant. 0.033(0.85) 0.030(0.75) MechanicaI data 1 2 -Case: SOT-523 Molded plastic 0.043(1.10) 0.008(0.20) 0.035(0.90) 0.004(0.10) -Terminals: Solderable per MIL-STD- 202G,method 208 0.069(1.75) 0.031(0.80) 0.057(1.45) 0.024(0.60) -Polarity: See diagram below -Mounting position: Any 0.004(0.10)max. Marking: see tabIe on page2 0.012(0.30) 0.006(0.15) 0.004(0.10)min. Dimensions in inches and (millimeter) 3 Single 1 2 Maximum Rating