DZ23C43-HE3_A-18

Overview

The DZ23C43-HE3_A-18 is a silicon planar Zener diode from the Vishay DZ23 series, housed in an SOT-23 surface-mount package. 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 AEC-Q101 automotive qualification. Electrical characteristics include a maximum reverse leakage current of 50 μA at 32 V and a dynamic resistance of 97 Ω at a test current of 2 mA. The component is supplied in tape-and-reel packaging for automated assembly.

Feature Summary

• Automotive-grade reliability certified under AEC-Q101 standards
• High electrostatic discharge protection exceeding 8 kV via human body model
• RoHS-compliant construction utilizing lead-free soldering materials

Applications

• Voltage regulation in automotive electronic control units
• Overvoltage protection circuits in vehicle power systems
• Reference voltage generation in automotive sensor interfaces

Procurement Notes

Verify that the ordering suffix HE3_A indicates AEC-Q101 qualification rather than commercial grade. Confirm the specific voltage code matches the required 43 V nominal value. Ensure the reel size corresponds to the -18 designation for proper handling equipment compatibility during manufacturing.

Selection Notes

Select this component when automotive certification is mandatory for the application. Consider the 97 Ω dynamic resistance for impedance matching requirements. Evaluate the thermal dissipation limits relative to the expected ambient operating conditions on the FR-4 board footprint.

Part Context

This part belongs to the DZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltages from 2.2 V to 75 V. The HE3_A variant specifically denotes the automotive-qualified version packaged in standard tape and reel formats for high-volume production environments.

Replacement Considerations

Direct substitutes must maintain the 43 V nominal voltage, SOT-23 package, and AEC-Q101 qualification. Verify that alternative components meet the same ±5 % tolerance and thermal resistance specifications to ensure circuit performance consistency.