BZX55-B20

BZX55 Series Zener Diodes Zener Voltage Range: 0.8, 2.4 to 200 Volts Power Dissipation: 500mW Features Silicon Planar Power Zener Diodes. The Zener voltages are graded according to the international E 24 standard. Standard Zener voltage tolerance is ±5%. Replace suffix "C" with "B" for ±2% tolerance. Other voltage tolerances and other Zener voltages are available upon request. Mechanical Data Case: DO-35 Glass Case Weight: approx. 0.13g Maximum Ratings and Thermal Characteristics (TA=25oC unless otherwise noted) Parameter Zener current (see Table "Characteristics") Power dissipation at Tamb=25oC Thermal resistance junction to ambient air Junction temperature Storage temperature range Ptot RθJA Tj TS 500 300 (1) Symbol Value Unit mW o (1) C/W o 175 -55 to +175 C C o Notes: 1. Valid provided that leads at a distance of 3/8" from case are kept at ambient temperature. 493 Electrical Characteristics (TA=25oC unless otherwise noted) Maximum VF=1.0V at IF=100mA Temp. coefficient of z ener voltage at IZ=5mA αvz (% / oC) Type number y=C for +5% y=B for +2% BZX55 - y0V8 BZX55 - y2V4 BZX55 - y2V7 BZX55 - y3V0 BZX55 - y3V3 BZX55 - y3V6 BZX55 - y3V9 BZX55 - y4V3 BZX55 - y4V7 BZX55 - y5V1 BZX55 - y5V6 BZX55 - y6V2 BZX55 - y6V8 BZX55 - y7V5 BZX55 - y8V2 BZX55 - y9V1 BZX55 - y10 BZX55 - y11 BZX55 - y12 BZX55 - y13 BZX55 - y15 BZX55 - y16 BZX55 - y18 BZX55 - y20 BZX55 - y22 BZX55 - y24 BZX55 - y27 BZX55 - y30 BZX55 - y33 BZX55 - y36 BZX55 - y39 BZX55 - y43 BZX55 - y47 BZX55 - y51 BZX55 - y56 BZX55 - y62 BZX55 - y68 BZX55 - y75 BZX55 - y82 BZX55 - y91 BZX55 - y100 BZX55 - y110 BZX55 - y120 BZX55 - y130 BZX55 - y150 BZX55 - y160 BZX55 - y180 BZX55 - y200 (3) Dynamic resistance at IZ=5mA f=1kHz rz j (Ω)