BZX84C43CC-HF

Single Zener Diodes Overview

The BZX84C43CC-HF is a dual common cathode Zener diode manufactured by Comchip Technology. It features a nominal Zener voltage of 43 V with a tolerance of 5%. The device operates within a power dissipation rating of 350 mW and is housed in an SOT-23-3 surface-mount package. Key electrical characteristics include a maximum reverse leakage current of 50 nA and a Zener impedance of 130 Ohms at the test current. It supports a wide operating temperature range from -65°C to +150°C, ensuring reliability in various electronic applications.

Single Zener Diodes Feature Summary

• Dual common cathode configuration for space-efficient circuit design
• High thermal stability with extended operating temperature range up to 150°C
• Low leakage current characteristics for improved efficiency
• Compact SOT-23-3 surface-mount packaging

Single Zener Diodes Applications

• Voltage reference circuits requiring stable dual references
• Over-voltage protection stages in signal lines
• Clamping applications in sensitive electronic interfaces
• General-purpose regulation in compact consumer electronics

Single Zener Diodes Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Comchip Technology or authorized distributors before integration. Confirm that the SOT-23-3 footprint matches your PCB layout requirements. Ensure that the 350 mW power dissipation limit is respected under your expected ambient temperature conditions to maintain device integrity and performance specifications.

Single Zener Diodes Selection Notes

Select this component when a dual Zener solution is required in a minimal footprint. The 43 V nominal voltage suits applications needing precise clamping or reference levels in that range. Consider the 130 Ohm impedance for dynamic response requirements. The high-temperature rating makes it suitable for environments where standard commercial grade devices may fail. Compare leakage current specs against other series if ultra-low standby current is critical.

Single Zener Diodes Part Context

This part belongs to the BZX84C series of dual Zener diodes from Comchip Technology. The series offers various voltage options in the same SOT-23-3 package, allowing designers to mix voltages while maintaining consistent board space utilization. The 'CC' suffix denotes the common cathode configuration, which simplifies biasing compared to common anode variants. This family is designed for general-purpose use in modern surface-mount assembly processes.

Single Zener Diodes Replacement Considerations

Direct pin-compatible replacements may exist from other manufacturers offering similar Zener voltages and power ratings in SOT-23-3 packages. Verify that any substitute maintains the 5% tolerance and 350 mW dissipation rating. Check if the replacement's Zener impedance and leakage current meet or exceed the original specifications for your specific application context.