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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-23-3
- Series：-
- Mfr：Diotec Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：45 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 12.6 V
- Operating Temperature：-50°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3 (TO-236)
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Diotec Semiconductor 2BZX84C18 is a surface-mount planar Zener diode configured as a common anode device within the SOT-23 package. It provides a nominal Zener voltage range of 16.8 V to 19.1 V at a test current (IZ) of 5 mA, with a dynamic resistance (rzj) of less than 45 Ohms at 1 kHz. The component supports a maximum power dissipation (Ptot) of 300 mW and operates across a junction temperature range of -50°C to +150°C. Standard voltage tolerance follows the E24 series at ±5%. The marking code for this specific part number is PA.
Feature Summary
- Sharp Zener voltage breakdown characteristics
- Low leakage current performance
- RoHS compliant manufacturing without exemptions
Applications
- Voltage stabilization circuits
- Electronic voltage regulators
Procurement Notes
Verify the exact ordering suffix against official Diotec documentation before procurement. Confirm that the required grade matches the application's reliability standards, distinguishing between commercial (-C), industrial, AEC-Q101 compliant (-Q), or qualified (-AQ) versions. Ensure the datasheet version aligns with the requested batch specifications.
Selection Notes
Select the 2BZX84C18 when a common anode dual-Zener configuration is required in a compact SOT-23 footprint. Verify that the 300 mW power dissipation rating accommodates the thermal environment. Check if the standard ±5% tolerance meets circuit requirements, or request tighter tolerances directly from the manufacturer if necessary.
Part Context
This component belongs to the BZX84Cxx / 2BZX84Cxx family of SMD Planar Zener Diodes manufactured by Diotec Semiconductor. The '2' prefix indicates a common anode configuration, allowing two independent Zener diodes to share a single common terminal. This family covers a wide voltage range from 2.4 V to 47 V.
Replacement Considerations
Direct replacement requires verifying pinout compatibility and electrical parameters. Other manufacturers offering SOT-23 common anode Zener diodes with similar voltage ranges and power ratings may be suitable substitutes, provided the dynamic resistance and leakage current specifications meet the design constraints.
