1N4681 TR PBFREE

Overview

The Central Semiconductor Corp 1N4681 TR PBFREE is a silicon Zener diode designed for low-level applications requiring extremely low operating current and leakage. It features a nominal Zener voltage of 2.4 V with a 5% tolerance, tested at 50 μA. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +200°C. It utilizes the DO-35 axial leaded package.

Feature Summary

• Designed for applications requiring extremely low operating current (50μA) and low leakage characteristics.
• Provides stable voltage regulation with a tight 5% tolerance on the nominal Zener voltage.
• Capable of high thermal operation with a maximum junction temperature rating of +200°C.

Applications

• Low-level voltage reference circuits
• Precision voltage regulation in sensitive analog systems
• Protection against overvoltage in low-current environments

Procurement Notes

Verify that the ordering suffix 'PBFREE' corresponds to lead-free plating as defined by the manufacturer's standard terms. Confirm the 'TR' designation aligns with the required packaging format for your assembly line. Ensure the component meets RoHS compliance requirements for your specific region before finalizing procurement.

Selection Notes

Select this component when circuit design demands minimal quiescent current consumption alongside precise low-voltage regulation. The DO-35 package is suitable for through-hole mounting. Consider the 500mW power rating and thermal derating curves if operating near the upper limits of the specified temperature range.

Part Context

This part belongs to the 1N4678 through 1N4717 series of low-level silicon Zener diodes. The series covers a voltage range from 1.8V to 43V, all sharing similar electrical characteristics such as 50μA test current and 5% tolerance. The 1N4681 specifically addresses the ~2.4V segment of this lineup.

Replacement Considerations

Direct replacements must match the 2.4V nominal Zener voltage, 500mW power rating, DO-35 package, and 5% tolerance. Verify that substitute components also support the required low leakage current and high junction temperature specifications.