DZ23C9V1-HE3-18

Overview

The DZ23C9V1-HE3-18 is a silicon planar Zener diode array from the Vishay DZ23 series, housed in an SOT-23 surface-mount package. It features a common cathode configuration with two independent diodes sharing a single ground terminal. The nominal Zener voltage is 9.1 V with a tolerance of ±5%. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at 7 V and a dynamic resistance of 10 Ω at a test current of 5 mA. The device supports a maximum power dissipation of 300 mW on an FR-4 board and operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Dual Zener diodes integrated into a single compact SOT-23 package for space-constrained designs
• Common cathode topology simplifies circuit layout by providing a shared reference ground
• Compliant with AEC-Q101 automotive qualification standards for enhanced reliability
• ESD protection capability exceeding 8 kV via human body model testing

Applications

• Voltage clamping and transient suppression in automotive electronic modules
• Reference voltage generation for analog-to-digital converter circuits
• Over-voltage protection stages in portable consumer electronics

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm that the specific HE3_A suffix aligns with required automotive grade specifications and RoHS compliance standards. Ensure storage conditions adhere to moisture sensitivity level 1 guidelines to prevent package degradation prior to soldering.

Selection Notes

Evaluate the thermal resistance parameters against the expected ambient operating temperatures to ensure junction limits are not exceeded. Compare the dynamic impedance values with the target application's noise requirements. Verify that the SOT-23 footprint dimensions match the printed circuit board design constraints and soldering profile capabilities.

Part Context

This component belongs to the DZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers a wide range of standardized voltage options graded according to the E24 standard. The DZ23C9V1 variant specifically targets applications requiring a precise 9.1 V regulation point within a minimal surface-mount form factor.

Replacement Considerations

Direct functional equivalents include the DZ23C9V1-E3-18 and DZ23C9V1-G3-18. These alternatives share identical electrical characteristics and physical packaging but may differ in commercial versus automotive qualification status. Cross-referencing datasheets is necessary to confirm pinout compatibility and thermal performance metrics.

FAQ

What is the maximum power dissipation rating for this device?

The maximum power dissipation is 500 mW when mounted directly to leads, and 300 mW when mounted on an FR-4 board using the recommended soldering footprint.

Does the HE3_A suffix indicate a different electrical function than the base part number?

No, the suffix indicates manufacturing variations related to RoHS compliance and AEC-Q101 automotive qualification; the core electrical parameters remain consistent with the DZ23C9V1 specification.

How is the ESD robustness of this component defined?

The component meets AEC-Q101 standards with an ESD capability greater than 8 kV using the human body model and greater than 800 V using the machine model.