CMHZ4679 TR

Single Zener Diodes Overview

The Central Semiconductor Corp CMHZ4679 TR is a surface mount silicon low level Zener diode in the SOD-123 case. It provides a nominal Zener voltage of 2.0 V with a tolerance of ±5%, ranging from 1.900 V to 2.100 V at a test current of 50 μA. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +150°C. Maximum reverse leakage current is specified as 5.0 μA at 1.0 V, while the maximum Zener current is 110.0 mA.

Single Zener Diodes Feature Summary

• Designed for applications requiring extremely low operating current and low leakage characteristics.
• Utilizes a highly reliable surface mount SOD-123 package suitable for automated assembly.
• Features a low noise density specification optimized for sensitive signal regulation.

Single Zener Diodes Applications

• Voltage regulation circuits requiring low standby current consumption
• Low-level reference voltage generation in precision analog systems
• Protection against transient voltage spikes in sensitive semiconductor inputs

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required plating finish, specifically PBFREE for lead-free compliance or TIN/LEAD if tin-lead plating is necessary. Confirm the reel packaging designation aligns with automated pick-and-place manufacturing requirements. Ensure the component meets RoHS directives for environmental compliance before final integration into production lines.

Single Zener Diodes Selection Notes

Select this component when circuit design demands minimal quiescent current alongside precise low-voltage clamping. The SOD-123 form factor offers space efficiency compared to through-hole alternatives. Evaluate thermal management needs based on the 500 mW dissipation limit and ensure the operating environment remains within the specified -65°C to +150°C junction temperature range.

Single Zener Diodes Part Context

This part belongs to the CMHZ4678 series, which covers a voltage range from 1.8 V to 43 V. All members share identical mechanical dimensions and electrical testing conditions, differing primarily in their specific Zener voltage breakdown points. The series is engineered for general-purpose low-power regulation tasks where compact footprint and reliability are prioritized over high-power handling capabilities.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering SOD-123 packaged Zener diodes rated at 2.0 V nominal voltage and 500 mW power dissipation. Verify that substitute components maintain equivalent leakage current specifications and noise density levels to ensure circuit performance parity without redesigning surrounding bias networks.