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The Diotec Semiconductor 2BZX84C20 is a surface-mount planar Zener diode housed in an SOT-23 (TO-236) package. It features a common anode configuration with a nominal Zener voltage range of 18.8 V to 21.2 V at a test current of 5 mA. The device supports a maximum power dissipation of 300 mW and operates within a junction temperature range of -50°C to +150°C. Electrical characteristics include a dynamic resistance below 55 Ω, a reverse leakage current of 0.05 mA at the specified reverse voltage, and a positive temperature coefficient between +6% and +9%.
Verify the specific suffix designation when ordering, as it determines the quality grade. The absence of a suffix indicates industrial grade, while the -Q suffix denotes AEC-Q101 compliance. Confirm that the component meets REACH regulations and conflict mineral requirements before finalizing procurement specifications.
Select this component for designs requiring a common anode Zener reference in a compact SOT-23 footprint. Ensure the circuit design accommodates the 300 mW power dissipation limit and the specified thermal resistance. Verify that the required Zener voltage tolerance aligns with the standard E24 grading provided in the datasheet tables.
This part belongs to the BZX84Cxx and 2BZX84Cxx series of SMD planar Zener diodes manufactured by Diotec Semiconductor. The series covers a wide voltage selection range from 2.4 V to 47 V. The 2BZX84Cxx variant specifically provides a common anode structure, distinguishing it from the single diode BZX84Cxx counterparts within the same product family.
Cross-reference with other manufacturers offering SOT-23 common anode Zener diodes with similar voltage ratings. Ensure equivalent power dissipation and thermal resistance values are met. Verify pinout compatibility and electrical tolerances against the original specification sheet.