View cmhz5221b-thru-cmhz5281b datasheet:

TM CMHZ5221B THRU CMHZ5281B Central Semiconductor Corp. SURFACE MOUNT ZENER DIODE 2.4 VOLTS THRU 200 VOLTS 500mW, 5% TOLERANCE DESCRIPTION: The CENTRAL SEMICONDUCTOR CMHZ5221B Series Silicon Zener Diode is a high quality voltage regulator, manufactured in a surface mount package, designed for use in industrial, commercial, entertainment and computer applications. SOD-123 CASE MAXIMUM RATINGS: SYMBOL UNIT Power Dissipation (@TL=75°C) PD 500 mW Storage Temperature Range Tstg -65 to +175 °C Maximum Junction Temperature TJ +150 °C Thermal Resistance ΘJL 150 °C/W ELECTRICAL CHARACTERISTICS: (TA=25°C), VF=0.9V MAX @ IF=10mA FOR ALL TYPES ZENER TEST MAXIMUM ZENER MAXIMUM MAX. MARKING TYPE NO. VOLTAGE CURRENT IMPEDANCE REVERSE TEMP. CODE VZ @ IZT IZT CURRENT COEFF.