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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 4.7V SOT-323
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：4.7 V
- Tolerance：±6.38%
- Power - Max：275 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：3 µA @ 2 V
- Operating Temperature：-65°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-323
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The CMSZDA4V7 TR TIN/LEAD is a dual common anode silicon Zener diode array manufactured by Central Semiconductor Corp. It features a nominal Zener voltage of 4.7 V with a tolerance of ±5%. The device operates in a surface-mount SOT-323 package and provides a maximum power dissipation of 275 mW per diode. Key electrical characteristics include a maximum reverse leakage current of 1 µA at 2 V, a forward voltage of 900 mV at 10 mA, and a Zener impedance of 40 Ohms. The component supports an operating temperature range from -65 °C to +150 °C.
Feature Summary
- Dual common anode configuration for space-efficient circuit design
- High thermal stability across extended industrial temperature ranges
- Low leakage current characteristics for precision regulation
Applications
- Voltage reference circuits requiring dual stable potentials
- Clamping and protection stages in signal processing paths
- Biasing networks in low-power analog interfaces
Procurement Notes
Verify the specific ordering suffix against manufacturer documentation to confirm lead-free status and packaging format. Ensure compatibility with standard reflow soldering profiles for SOT-323 packages. Confirm that the tin/lead variant meets project-specific environmental compliance requirements before finalizing procurement orders.
Selection Notes
Select this component when a dual Zener configuration is required in a compact footprint. Compare the 275 mW power rating against total circuit dissipation needs. Verify that the 4.7 V nominal voltage aligns with target reference levels. Consider the 40 Ohm impedance for dynamic load applications.
Part Context
This part belongs to the CMSZDA series of dual Zener arrays from Central Semiconductor. These devices are designed as alternatives to discrete dual-diode solutions, offering improved board space utilization. The series covers various voltage options within the same SOT-323 package family.
Replacement Considerations
Check for direct pin-compatible equivalents in the SOT-323 package with matching 4.7 V Zener voltage and 275 mW power rating. Verify that substitute parts maintain the same common anode configuration and electrical tolerances.
