BZT52B20-HE3-18

Single Zener Diodes Overview

The BZT52B20-HE3-18 is a silicon planar Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It provides a nominal Zener voltage of 20 V with a tolerance of ±2%. The device operates within a junction temperature range of -55 °C to +150 °C and features a maximum power dissipation of 500 mW at ambient temperature, reducing to 300 mW on an FR-4 board. It is housed in the SOD-123 surface-mount package and holds AEC-Q101 qualification.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive applications
• High ESD capability exceeding 8 kV (HBM) and 800 V (MM)
• RoHS-compliant construction

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized channels. Confirm that the ordering suffix matches the required tape-and-reel packaging format. Ensure compliance with RoHS directives and material categorization standards before integration into production workflows.

Single Zener Diodes Selection Notes

Select this variant when precise voltage regulation within a narrow tolerance band is required. The HE3 designation indicates AEC-Q101 qualification suitable for automotive environments. Verify thermal management requirements against the specified power derating curves for the target operating conditions.

Single Zener Diodes Part Context

This component belongs to the BZT52 series of small signal Zener diodes. The 'B' prefix denotes a tighter ±2% voltage tolerance compared to the standard 'C' series. The 'HE3' suffix identifies it as a lead-free, halogen-free product compliant with automotive reliability standards.

Single Zener Diodes Replacement Considerations

Substitutes must match the 20 V nominal voltage, ±2% tolerance, and SOD-123 package. Verify that alternative components meet the same AEC-Q101 qualification and thermal resistance specifications.