CMPZDA3V3 TR TIN/LEAD

Overview

The CMPZDA3V3 TR TIN/LEAD is a surface-mount dual silicon Zener diode manufactured by Central Semiconductor Corp. It features a common anode configuration within a SOT-323-3 package, designed for low-power voltage regulation applications. The device specifies a nominal Zener voltage of 3.3 V with a maximum power dissipation of 250 mW per diode. Electrical characteristics include a maximum reverse leakage current of 3 µA and a Zener impedance of 10 Ω at a test current of 5 mA. The component operates reliably across a temperature range from -65 °C to +150 °C.

Feature Summary

• Dual Zener diodes integrated in a single compact surface-mount package
• Common anode configuration simplifies circuit layout for reference applications
• Low leakage current ensures stable performance in precision voltage regulation

Applications

• Voltage reference circuits requiring dual independent references
• Clamping and protection stages in low-power digital logic interfaces
• Biasing networks in analog signal conditioning modules

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm lead-free status and tape-and-reel packaging specifications. Ensure compatibility with standard SMT assembly processes for the SOT-323 footprint. Cross-reference electrical parameters with the official datasheet to validate suitability for the target operating temperature range and voltage tolerance requirements.

Selection Notes

Select this component when a dual Zener solution with a common anode topology is required in a minimal footprint. The 3.3 V nominal voltage makes it suitable for interfacing with 3.3 V logic systems. Consider the 250 mW power rating and thermal resistance when designing PCB copper areas for adequate heat dissipation under continuous operation conditions.

Part Context

This part belongs to the CMPZDA series of surface-mount dual Zener diodes offered by Central Semiconductor. The series provides various voltage options in standardized packages like SOT-323, catering to space-constrained designs. The CMPZDA3V3 specifically addresses needs for dual voltage references or clamping functions where board real estate is limited.

Replacement Considerations

Check for direct pin-compatible alternatives from other manufacturers offering dual Zener diodes in SOT-323 packages. Verify that substitute parts match the 3.3 V Zener voltage, 250 mW power rating, and common anode configuration to ensure functional equivalence without redesigning the schematic.