BZT52B39-HE3_A-18

Single Zener Diodes Overview

The BZT52B39-HE3_A-18 is a silicon planar Zener diode from Vishay General Semiconductor, housed in an SOD-123 surface-mount package. It provides a nominal Zener voltage of 39 V with a tight tolerance of ±2%. The device is AEC-Q101 qualified for automotive applications and operates within a temperature range of -55 °C to +150 °C. Maximum power dissipation is rated at 500 mW, with a test current of 2 mA.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• High ESD protection capability exceeding 8 kV HBM and 800 V MM
• RoHS-compliant construction utilizing the HE3 technology

Single Zener Diodes Applications

• Automotive circuit voltage regulation
• Precision reference voltage generation
• Transient voltage suppression in sensitive electronics

Single Zener Diodes Procurement Notes

Verify that the specific ordering code matches the required tolerance and qualification level. Confirm the suffix indicates the correct reel size and packaging format. Ensure the component meets RoHS3 compliance requirements for your manufacturing process. Cross-reference the date code against production schedules if lead times are critical.

Single Zener Diodes Selection Notes

Select this variant when a strict ±2% voltage tolerance is required compared to standard commercial grades. The HE3 designation ensures compliance with environmental directives while maintaining high reliability. Verify that the SOD-123 footprint aligns with the PCB layout constraints and thermal management strategy.

Single Zener Diodes Part Context

This component belongs to the BZT52 series of small signal Zener diodes manufactured by Vishay. The series covers a wide voltage range from 2.2 V to 75 V. The BZT52B prefix specifically denotes the tighter 2% tolerance grading within the family.

Single Zener Diodes Replacement Considerations

Check for other BZT52B39 variants with different suffixes or packages. Verify equivalent parts from other manufacturers meet the same AEC-Q101 and RoHS3 specifications.