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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 3.9V SOT-23
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：3.9 V
- Tolerance：±5.13%
- Power - Max：350 mW
- Impedance (Max) (Zzt)：90 Ohms
- Current - Reverse Leakage @ Vr：2 µA @ 1 V
- Operating Temperature：-65°C ~ 175°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The CMPZDA3V9 TR TIN/LEAD is a dual Zener diode manufactured by Central Semiconductor Corp. It features a nominal Zener voltage of 3.9 V with a maximum reverse leakage current of 1 µA and a Zener impedance of 25 Ohms. The device operates in an SMD/SMT configuration within a SC-70-3 package, supporting a power dissipation of 250 mW. It functions across a temperature range from -65 °C to +150 °C, with a test current of 5 mA and a forward voltage of 800 mV.
Feature Summary
- Dual Zener diode configuration for compact circuit integration
- Low leakage current characteristics for precision applications
- High thermal stability suitable for extreme operating environments
Applications
- Voltage reference circuits requiring stable low-voltage regulation
- Signal clamping and protection in sensitive electronic systems
- Overvoltage protection in portable consumer devices
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to confirm lead-free status and packaging details. Confirm RoHS compliance requirements prior to procurement. Ensure the SC-70-3 footprint matches the target PCB design. Validate electrical parameters against the latest datasheet revision before finalizing component selection.
Selection Notes
Select this component when a dual Zener configuration is required in a minimal surface-mount footprint. The 3.9 V nominal voltage suits low-voltage reference needs. Consider the 250 mW power dissipation limit for thermal management. Verify that the SC-70-3 package dimensions align with assembly constraints. Compare leakage current specifications against alternative dual Zener options for precision requirements.
Part Context
This part belongs to the CMPZDA series of dual Zener diodes from Central Semiconductor. These components are designed for space-constrained applications requiring multiple voltage references or clamping functions in a single package. The series offers various voltage options to accommodate different circuit requirements while maintaining consistent performance characteristics.
Replacement Considerations
Consult official substitution guides for compatible dual Zener diodes in SC-70-3 packages. Verify matching electrical parameters including Zener voltage tolerance, leakage current, and power dissipation. Ensure pinout compatibility and thermal performance meet original design specifications.
