BZT52B20S

Single Zener Diodes Overview

The BZT52B20S is a single-die surface-mount Zener diode manufactured by Taiwan Semiconductor Corporation. It operates within the BZT52B series, providing a nominal Zener voltage of 20V with a tight tolerance of ±2%. The device is housed in an SOD-323F plastic package and supports a maximum power dissipation of 200mW at 25°C ambient temperature. Key electrical parameters include a test current (IZT) of 5mA, a regular impedance (ZZT) of 55Ω, and a leakage current (IR) of 45µA at a reverse voltage of 14.0V. The component functions reliably across a junction temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Features a planar die construction designed for automated assembly processes.
• Utilizes a small SOD-323F surface mount package with matte tin plated leads.
• Complies with RoHS directives and utilizes halogen-free green molding compound.
• Meets JESD 201 class 1A whisker test requirements.

Single Zener Diodes Applications

• Low voltage stabilizers
• Voltage references
• Adapters
• On-board DC/DC converters

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details such as tape width and reel quantity. Confirm that the requested variant includes the halogen-free green compound if environmental compliance is required. Ensure the procurement specification matches the exact marking code 'NZ' to guarantee the correct 20V breakdown voltage and ±2% tolerance characteristics.

Single Zener Diodes Selection Notes

Select this component when a precise 20V reference with high accuracy is required in space-constrained designs. The SOD-323F package offers a compact footprint suitable for high-density PCB layouts. Consider the 200mW power dissipation limit and thermal resistance when designing heat management strategies. Verify that the operating environment remains within the specified -65°C to +150°C junction temperature range for reliable performance.

Single Zener Diodes Part Context

This part belongs to the BZT52B series from Taiwan Semiconductor, which covers a wide Zener voltage selection ranging from 2.4V to 75V. All devices in this series share the same mechanical case style and feature a standard ±2% voltage tolerance. The series is engineered for general-purpose voltage regulation applications requiring consistent performance and reliability in surface-mount configurations.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering SOD-323F packaged Zener diodes rated at 20V with ±2% tolerance. Verify that alternative parts match the 200mW power dissipation and 55Ω impedance specifications. Ensure mechanical dimensions and terminal solderability standards are compatible with existing assembly processes.

Single Zener Diodes FAQ

What is the marking code for the BZT52B20S?

The marking code for the BZT52B20S is 'NZ'.

What is the maximum forward voltage drop?

The maximum forward voltage drop is 1V at a forward current of 10mA.

Is the device lead-free?

Yes, the device is RoHS compliant and features matte tin plated leads.