BZT52C43-HE3-18

Single Zener Diodes Overview

The BZT52C43-HE3-18 is a silicon planar Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It provides a nominal Zener voltage of 43 V with a tolerance of ±5%. The device operates within a temperature range of -55°C to +150°C and features a maximum power dissipation of 500 mW at ambient conditions, or 300 mW on an FR-4 board. Packaged in the SOD-123 surface-mount format, it exhibits a dynamic resistance of 97 Ohms at a test current of 2 mA and maintains a reverse leakage current of no more than 100 nA.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Complies with AEC-Q101 automotive qualification standards
• Offers high electrostatic discharge protection capability

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection systems
• Clamping applications

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status and check for specific manufacturing date codes. Ensure storage conditions adhere to moisture sensitivity level requirements before soldering. Validate that the ordering code matches the exact voltage and package specifications required for the design.

Single Zener Diodes Selection Notes

Select this component when a precise 43 V regulation point is needed in a compact surface-mount layout. Consider the thermal resistance characteristics if operating near maximum power limits. Verify that the ±5% tolerance aligns with circuit accuracy requirements. Evaluate the low leakage current suitability for high-impedance nodes.

Single Zener Diodes Part Context

This part belongs to the BZT52 series of small signal Zener diodes from Vishay. The series covers a wide voltage range from 2.2 V to 75 V using E24 grading. The HE3 suffix indicates a lead-free and halogen-free construction compliant with environmental directives. The -18 suffix denotes packaging in 13-inch reels containing 10,000 units per box.

Single Zener Diodes Replacement Considerations

BZT52C43-E3-18

Single Zener Diodes FAQ

What is the marking code for the BZT52C43?

The marking code for the BZT52C43 is YY.

How does the power dissipation change on an FR-4 board?

On an FR-4 board with the recommended soldering footprint, the maximum power dissipation decreases to 300 mW.