CMZB100 to CMZB390 TOSHIBA Zener Diode Silicon Junction CMZB100 to CMZB390 ○ Communication, Control and Measurement Equipment ○ Constant Voltage Regulation Power dissipation: P = 1 W Zener voltage: VZ = 100 to 390 V Suitable for high-density board assembly due to the use of a small surface-mount package, M FLATTM Unit: mm Absolute Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Power dissipation P 1 (Note 1) W Junction temperature Tj.