View cmszda-series datasheet:

TM CMSZDA2V4 THRU Central CMSZDA47V Semiconductor Corp. SURFACE MOUNT DESCRIPTION: DUAL, SILICON ZENER DIODE The CENTRAL SEMICONDUCTOR 2.4 VOLTS THRU 47 VOLTS 275mW CMSZDA2V4 Series silicon dual zener diode is a highly quality voltage regulator, connected in a common anode configuration, for use in industrial, commercial, entertainment and computer applications. MARKING CODE: SEE MARKING CODES ON ELECTRICAL CHARACTERISTICS TABLE SOT-323 CASE MAXIMUM RATINGS: (TA=25°C) SYMBOL UNITS Power Dissipation PD 275 mW Operating and Storage Temperature TJ, Tstg -65 TO +150 °C Thermal Resistance ΘJA 455 °C/W ELECTRICAL CHARACTERISTICS PER DIODE: (TA=25°C) VF=0.9V MAX @ IF=10mA FOR ALL TYPES. MAXIMUM TYPE NO. ZENER MAXIMUM MARKING MAXIMUM ZENER VOLTAGE TEST MAXIMU