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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-23-3
- Series：DZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Cathode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：18 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 14 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The DZ23C18-HE3_A-18 is a silicon planar Zener diode from the Vishay DZ23 series, designed for surface-mount applications in the SOT-23 package. It provides a nominal Zener voltage of 18 V with a tolerance of ±5%. The device operates at a test current of 5 mA and features a maximum power dissipation of 300 mW on an FR-4 board. Qualified to AEC-Q101 standards, it supports junction temperatures up to 150 °C and includes ESD protection exceeding 8 kV (HBM) and 800 V (MM).
Feature Summary
- AEC-Q101 qualified for automotive reliability requirements.
- High electrostatic discharge (ESD) capability per AEC-Q101 standards.
- RoHS-compliant construction utilizing HE3_A technology.
Applications
- Voltage reference circuits requiring stable DC levels.
- Clamping and protection stages in automotive electronic modules.
- General-purpose regulation within low-power surface-mount designs.
Procurement Notes
Verify that the ordering code matches the specific suffix required for the tape-and-reel quantity. Confirm the HE3_A designation is present to ensure AEC-Q101 qualification status. Cross-reference the manufacturer part number against official Vishay documentation to validate compliance with RoHS directives before finalizing procurement orders.
Selection Notes
Select this component when a precise 18 V reference is needed in a compact SOT-23 footprint. Ensure the circuit design accommodates the 300 mW thermal limit on standard PCBs. Verify that the ±5% voltage tolerance aligns with the system's accuracy requirements and that the operating temperature range covers the intended environmental conditions.
Part Context
This device belongs to the DZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of graded voltages from 2.2 V to 75 V. The HE3_A variant specifically denotes the version that meets automotive quality standards while maintaining lead-free compliance.
Replacement Considerations
Direct replacements must match the 18 V nominal voltage, SOT-23 package, and AEC-Q101 qualification. Verify that alternative components support the same 5 mA test current and possess equivalent dynamic resistance and leakage characteristics to maintain circuit performance.
FAQ
What is the dynamic resistance of the DZ23C18-HE3_A-18?
The maximum dynamic resistance (ZZ) at the test current of 5 mA is specified as 45 Ω.
Does the DZ23C18-HE3_A-18 meet automotive standards?
Yes, the HE3_A suffix indicates that the device is qualified according to the AEC-Q101 stress test qualification for automotive grade discrete semiconductors.
What is the reverse leakage current specification?
The maximum reverse leakage current (IR) is 0.05 µA when measured at a reverse voltage of 14 V.
