BZT52B39

Single Zener Diodes Overview

The BZT52B39 is a surface-mount Zener diode from the Taiwan Semiconductor BZT52B series, housed in an SOD-123F package. It provides a nominal Zener voltage of 39V with a tolerance of ±2%. The device supports a maximum power dissipation of 500mW and operates within a junction temperature range of -65°C to +150°C. Electrical characteristics include a dynamic impedance of 130 Ohms at a test current of 2mA, a breakdown voltage test current of 0.5mA, and a maximum reverse leakage current of 45µA at 27.3V.

Single Zener Diodes Feature Summary

• Features a flat lead SOD-123 small outline plastic package suitable for automated assembly processes.
• Offers high precision with a standard Zener voltage tolerance of ±2% across the series.
• Constructed using planar die technology for reliable performance.
• Compliant with RoHS directives and WEEE standards, ensuring environmental safety.

Single Zener Diodes Applications

• Voltage regulation circuits
• Overvoltage protection systems
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required electrical parameters, particularly the 39V nominal voltage and ±2% tolerance. Confirm compliance requirements such as RoHS and halogen-free status if specified by the design. Ensure the SOD-123F package footprint aligns with the PCB layout. Check datasheet revisions for any updates to thermal or electrical ratings before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 39V reference is needed in a compact surface-mount form factor. The ±2% tolerance makes it suitable for applications requiring tighter voltage accuracy than standard 5% devices. Consider the 500mW power rating and thermal resistance when designing heat dissipation strategies. Verify that the operating temperature range meets the environmental conditions of the target application.

Single Zener Diodes Part Context

This component belongs to the BZT52B series of small signal Zener diodes manufactured by Taiwan Semiconductor. The series covers a wide voltage range from 2.4V to 75V, all sharing the same SOD-123F package and general mechanical specifications. The 'B' suffix indicates the ±2% tolerance variant, distinguishing it from other tolerance options within the broader BZT52 family.

Single Zener Diodes Replacement Considerations

Compatible substitutes include Vishay BZT52B39-V and Diodes Incorporated BZT52C39-13, provided they meet the 39V nominal voltage and ±2% tolerance requirements. Verify that replacement parts offer equivalent power dissipation (500mW) and fit the SOD-123F package dimensions. Ensure the alternative components maintain similar dynamic impedance and leakage current characteristics for circuit compatibility.

Single Zener Diodes FAQ

What is the Zener voltage tolerance for the BZT52B39?

The BZT52B39 has a standard Zener voltage tolerance of ±2%.

What is the maximum power dissipation of this device?

The maximum power dissipation is 500mW at 25°C ambient temperature.

What package type does the BZT52B39 use?

It uses a flat lead SOD-123 small outline plastic package (SOD-123F).