View cmbz5221b-thru-cmbz5260b-series datasheet:

 RECTRON CMBZ5221B SEMICONDUCTOR THRU TECHNICAL SPECIFICATION CMBZ5260B 5% SOT-23 SURFACE MOUNT ZENER DIODE Absolute Maximun Ratings (Ta=25oC) Dimensions Items Symbol Ratings Unit SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 Power Dissipation PTOT 300 mW Tollarance 5 % Voltage Range Vz 2.4 - 43 V Foward Voltage Vf 250 V @ if = 10mA Rep. Oeak Fwd. IFRM 250 mA Current Junction Temp. TJ -55 to 125 °C Storage Temp. TSTG -55 to 150 °C Mechanical Data Items Materials Package SOT-23 Lead Frame 42 Alloy Lead Finish Solder Plating 1. ANODE 2. NC Bond Wire Au 3. CATHODE Mold Resin Epoxy (UNITS: mm) Chip Silicon Electrical Characteristics (Ta=25oC) ZENER MAX ZENER MAX ZENER TEMP. MAXIMUM VOLTAGE IMPEDANCE IMPEDANCE COEFF. REVERSE Izt = 1.0mA CURRENT TYPE dvz