CMHZ4685 BK

Single Zener Diodes Overview

The CMHZ4685BK is a surface-mount silicon low-level Zener diode from the Central Semiconductor CMHZ4678 series. It provides a nominal Zener voltage of 3.6 V with a tolerance of ±5%. The device operates at a test current of 50 µA and supports a maximum power dissipation of 500 mW. It features a maximum reverse leakage current of 7.5 µA at 2.0 V and a maximum Zener current of 75.0 mA. The component is housed in an SOD-123 package and is rated for junction temperatures ranging from -65°C to +150°C.

Single Zener Diodes Feature Summary

• Designed for applications requiring extremely low operating current and low leakage
• Highly reliable voltage regulator construction
• Utilizes a compact SOD-123 surface mount case

Single Zener Diodes Applications

• Low level voltage regulation circuits
• General purpose switching applications
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify the specific suffix BK against manufacturer documentation to confirm plating or marking variations. Ensure the ordering part number matches the required lead finish, as Central Semiconductor distinguishes between standard and Pb-free configurations via explicit suffixes. Confirm the SOD-123 package type aligns with PCB footprint requirements before procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 3.6 V reference is needed with minimal leakage current. The 500 mW power rating allows for moderate current handling in small form factors. Verify that the 5% tolerance meets circuit accuracy requirements. Consider the SOD-123 package dimensions for space-constrained designs compared to larger axial leads.

Single Zener Diodes Part Context

This device belongs to the CMHZ4678 through CMHZ4717 series of surface mount silicon low-level Zener diodes. The series covers a voltage range from 1.8 V to 43 V with consistent 500 mW power dissipation capabilities. All members share similar electrical characteristics regarding leakage and noise density, differing primarily in their nominal Zener voltage and corresponding marking codes.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.