TZX18A-TAP

Single Zener Diodes Overview

The TZX18A-TAP is a single silicon Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It belongs to the TZX series and features an 18 V nominal Zener voltage with a ±10% tolerance. The device is rated for a maximum power dissipation of 0.5 W and has a maximum dynamic impedance of 55 Ω. It operates within a temperature range of -65°C to 175°C TJ. The component utilizes a DO-35 axial leaded package and holds AEC-Q101 qualification for automotive applications.

Single Zener Diodes Feature Summary

• Low noise operation capability
• Automotive grade reliability via AEC-Q101 qualification
• High thermal stability up to 175°C junction temperature

Single Zener Diodes Applications

• Voltage reference circuits in automotive electronics
• Overvoltage protection in industrial control systems
• Clamping applications in general purpose discrete semiconductor designs

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TAP' against official Vishay documentation to confirm tape-and-reel packaging specifications, as standard datasheets may list bulk or reel variants. Ensure the part number matches the exact electrical parameters required for your circuit design, particularly the 18V Zener voltage and 0.5W power rating. Confirm AEC-Q101 compliance if automotive qualification is mandatory for your application.

Single Zener Diodes Selection Notes

Select this component when a precise 18V reference is needed in an axial package suitable through-hole mounting. The ±10% tolerance offers standard regulation accuracy. Consider the 55 Ω dynamic impedance for load regulation requirements. The wide operating temperature range supports harsh environment deployment. Verify that the 0.5W power rating meets the thermal dissipation needs of the target circuit under worst-case conditions.

Single Zener Diodes Part Context

This part is part of Vishay's TZX series of low-noise Zener diodes designed for robust performance. The series provides various voltage options in the DO-35 package. The TZX18A variant specifically targets applications requiring stable voltage regulation at 18V. Vishay emphasizes quality and reliability in this discrete semiconductor line, catering to both industrial and automotive sectors.

Single Zener Diodes Replacement Considerations

Check for direct cross-reference equivalents from other manufacturers offering 18V, 0.5W Zener diodes in DO-35 packages. Ensure any substitute maintains the same AEC-Q101 qualification if automotive use is intended. Verify pinout compatibility and thermal characteristics before substitution.