CZRQR4V3B-HF

Single Zener Diodes Overview

The CZRQR4V3B-HF is a single Zener diode manufactured by Comchip Technology, designed for surface-mount applications. It features an SOD-923F-2 package with dimensions of 1.05 mm in length, 0.65 mm in width, and 0.55 mm in height. The device provides a nominal Zener voltage of 4.3 V with a tight tolerance of 2.5%. It operates with a maximum power dissipation of 125 mW at 25°C and maintains performance across a temperature range from -55°C to +125°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA at the rated voltage and a dynamic impedance of 25 Ohms when tested at a current of 5 mA.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a 2.5% tolerance for sensitive circuit protection
• Utilizes an extremely thin leadless SOD-923F-2 package optimized for space-constrained designs
• Ensures stable operation across wide industrial temperature ranges up to 125°C

Single Zener Diodes Applications

• Voltage reference circuits requiring high precision
• Over-voltage protection in portable electronic devices
• Clamping applications in signal processing lines

Single Zener Diodes Procurement Notes

Verify the specific suffix against official Comchip Technology documentation to confirm exact electrical tolerances and packaging configurations. Ensure compatibility with standard reflow soldering profiles for the SOD-923F-2 package. Cross-reference datasheet parameters such as leakage current and impedance with your specific circuit requirements before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a low-profile surface-mount solution is required for precise voltage clamping. The 2.5% tolerance makes it suitable for applications demanding tighter regulation than standard 5% devices. Consider the 125 mW power rating and thermal management capabilities within the target enclosure. The small footprint allows for high-density PCB layouts where larger packages like SOD-323 are not feasible.

Single Zener Diodes Part Context

This part belongs to the CZRQR series of Zener diodes from Comchip Technology, which focuses on small-form-factor semiconductor solutions. The series utilizes planar die construction to ensure reliability and consistent performance. These components are halogen-free and compliant with RoHS directives, supporting environmentally conscious manufacturing processes while maintaining robust electrical characteristics for general-purpose electronics.

Single Zener Diodes Replacement Considerations

Direct substitutes may include other 4.3V Zener diodes in the SOD-923F-2 package with comparable 2.5% tolerance and 125 mW power ratings. Verify pinout polarity and physical dimensions to ensure mechanical fit. Electrical parameters such as dynamic impedance and leakage current should be compared to ensure equivalent circuit behavior.