1N4684 TR PBFREE

Overview

The Central Semiconductor Corp 1N4684 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 3.3 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 and includes a maximum reverse leakage current of 7.5 μA.

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-temperature 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 transients in low-current environments

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the specific reel packaging configuration required by your assembly line. Confirm that the 'PBFREE' designation aligns with RoHS compliance requirements for your manufacturing process. Ensure the DO-35 axial lead form factor matches your PCB footprint design before finalizing procurement.

Selection Notes

Select this component when circuit designs demand minimal quiescent current consumption alongside precise voltage clamping. The 500 mW power rating allows for moderate current handling in compact axial packages. Consider the ±5% voltage tolerance and the specific test current of 50 μA to ensure compatibility with the target application's biasing conditions.

Part Context

This part belongs to the 1N4678 through 1N4717 series of low-level silicon Zener diodes manufactured by Central Semiconductor. The series covers a voltage range from 1.8 V to 43 V, all sharing common electrical characteristics such as low leakage and a 50 μA test current standard. The 1N4684 specifically addresses the 3.3 V segment of this lineup.

Replacement Considerations

Direct replacements must match the 3.3 V nominal Zener voltage, 500 mW power dissipation, and DO-35 package type. Verify that substitute components maintain the same 5% tolerance and low-leakage specifications to ensure circuit performance parity.