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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 51V SOT-23-3
- Series：DZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Cathode
- Voltage - Zener (Nom) (Vz)：51 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：70 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 38 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 DZ23C51-HE3_A-18 is a silicon planar Zener diode array from the Vishay DZ23 series, housed in an SOT-23 package. It features two common cathode elements with a nominal Zener voltage of 51 V and a tolerance of ±5 %. The device operates within a junction temperature range of -55 °C to +150 °C and supports a maximum power dissipation of 500 mW on leads or 300 mW on an FR-4 board. It is AEC-Q101 qualified for automotive applications and supplied in tape-and-reel packaging.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- ESD protection capability exceeding 8 kV via human body model
- RoHS-compliant construction with HE3_A suffix designation
Applications
- Automotive electronic circuit protection
- Voltage reference stabilization
- Overvoltage clamping in signal lines
Procurement Notes
Verify that the ordering code includes the HE3_A suffix to confirm AEC-Q101 qualification. Ensure the final digit matches the required reel size (08 for 7-inch reels or 18 for 13-inch reels). Confirm RoHS compliance status through official Vishay documentation before procurement.
Selection Notes
Select this component when dual Zener channels are required in a compact surface-mount footprint. The HE3_A variant is necessary for automotive-grade environments requiring AEC-Q101 certification. Verify thermal management requirements against the 300 mW limit on FR-4 substrates.
Part Context
This part belongs to the DZ23 series of small-signal Zener diodes manufactured by Vishay General Semiconductor - Diodes Division. The series offers various voltage options graded according to the E24 standard, all utilizing the same SOT-23 package format for consistent board layout across different voltage requirements.
Replacement Considerations
DZ23C51-E3-18
FAQ
What is the specific meaning of the HE3_A suffix?
The HE3_A suffix indicates that the device is RoHS-compliant and meets AEC-Q101 qualification standards for automotive applications.
How does the power dissipation rating change based on mounting conditions?
The maximum power dissipation is 500 mW when measured at the leads, but it reduces to 300 mW when mounted on an FR-4 board using the recommended soldering footprint.
What is the internal configuration of the DZ23C51-HE3_A-18?
The device contains two Zener diode elements configured as a common cathode pair within a single SOT-23 package.
