View cmz5342b-thru-cmz5388b datasheet:

TM CMZ5342B Central THRU Semiconductor Corp. CMZ5388B HIGH POWER ZENER DIODE 6.8 VOLTS THRU 200 VOLTS DESCRIPTION: 5.0W, 5% TOLERANCE The CENTRAL SEMICONDUCTOR CMZ5342B Series Silicon Zener Diode is a high quality voltage regulator, manufactured in an epoxy molded surface mount package, designed for use in industrial, commercial, entertainment and computer applications. SMC CASE ABSOLUTE MAXIMUM RATINGS: SYMBOL UNITS Power Dissipation (@TA=25°C) PD 5.0 W Operating and Storage Temperature -65 to +150 °C TJ,Tstg ELECTRICAL CHARACTERISTICS: (TA=25°C), VF=1.2V MAX @ IF=1.0A FOR ALL TYPES. MAXIMUM MAXIMUM MAXIMUM MAXIMUM MAXIMUM ZENER TEST ZENER REVERSE SURGE VOLTAGE REGULATOR MARKING TYPE NO. VOLTAGE CURRENT IMPEDANCE CURRENT CURRENT REGULATION CURRENT CODE VZ@IZ