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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)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 14 V
- Operating Temperature：-55°C ~ 150°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Vishay DZ23C18-E3-18 is a silicon planar Zener diode in the DZ23 series, housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 18 V with a standard tolerance of ±5 %. The device operates at a test current of 5 mA and features a maximum reverse leakage current of 0.05 μA at 14 V. Dynamic resistance is specified at 45 Ω (at Izt1) and 170 Ω (at Izt2). Power dissipation reaches 500 mW on FR-4 boards, with an operating temperature range from -55 °C to +150 °C.
Feature Summary
- Silicon planar construction for stable voltage regulation
- Graded according to international E24 standard
- ESD protection exceeding 8 kV human body model
Applications
- Voltage reference circuits
- Overvoltage protection
- Clamping applications
Procurement Notes
Verify the specific ordering code suffix against official documentation to confirm reel specifications and minimum order quantities. Confirm RoHS compliance status and AEC-Q101 qualification requirements prior to procurement. Ensure the component matches the required voltage tolerance and thermal characteristics for the target application environment.
Selection Notes
Select this component based on the 18 V nominal requirement and ±5 % tolerance. Verify that the 5 mA test current aligns with circuit design parameters. Consider the SOT-23 package dimensions and thermal resistance values when designing the PCB footprint and managing heat dissipation under continuous operation conditions.
Part Context
This part belongs to the Vishay DZ23 series of small signal Zener diodes. The series covers a wide voltage range from 2.2 V to 75 V. All devices share common packaging and thermal characteristics while offering graded voltages to meet standard electronic design requirements.
Replacement Considerations
Check for direct equivalents within the same manufacturer's portfolio or cross-reference with other suppliers offering identical electrical parameters and physical dimensions. Ensure any substitute maintains the same voltage tolerance and package type.
FAQ
What is the dynamic resistance of the DZ23C18-E3-18?
The dynamic resistance is 45 Ω at the primary test current (Izt1) and 170 Ω at the secondary test current (Izt2).
Is the DZ23C18-E3-18 AEC-Q101 qualified?
No, the base P/N-E3 variant is commercial grade. AEC-Q101 qualification is available only for the HE3_A variant.
What is the marking code for this device?
The marking code for the DZ23C18 is V61.
