1N4681

Single Zener Diodes Overview

The Microchip Technology 1N4681 is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 2.4 V with a tolerance of ±5%. The device operates in the DO-35 glass axial-leaded package, supporting through-hole mounting. It has a maximum power dissipation of 500 mW and functions within a temperature range of -65°C to +175°C. Key electrical parameters include a test current of 50 µA, a maximum reverse leakage current of 2 µA at 1 V, and a forward voltage of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features internal metallurgical bonding option for enhanced reliability
• Utilizes glass axial-leaded construction for robust performance

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., -1) required for metallurgical bonding or military screening standards. Confirm RoHS compliance status as standard versions may not meet current environmental directives. Ensure the selected package variant matches the intended PCB layout requirements.

Single Zener Diodes Selection Notes

Select this component when a precise 2.4 V reference is needed in a standard axial package. Consider the -1 suffix if internal metallurgical bonding is specified for high-reliability designs. Evaluate thermal management needs given the 500 mW power rating and wide operating temperature capability.

Single Zener Diodes Part Context

This part belongs to the 1N4678 through 1N4717 series of 0.5 W Zener Voltage Regulators. The series offers various voltage options from 1.8 to 43 volts in standard 5% tolerances. These components are JEDEC registered and available in multiple package formats including surface mount variants.

Single Zener Diodes Replacement Considerations

Equivalent parts include CDLL4681 for surface mount applications and MQ1N4681-1TR for screened variants. Verify pinout compatibility and ensure the replacement meets the same 500 mW power dissipation and 2.4 V Zener voltage specifications.