1N4683 BK PBFREE

Overview

The Central Semiconductor Corp 1N4683 BK 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 3.0 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 and low leakage
• Provides stable voltage regulation with tight 5% tolerance
• Capable of operation across an extended industrial temperature range

Applications

• Low-level voltage reference circuits
• Precision voltage regulation in sensitive electronics
• Protection against overvoltage transients

Procurement Notes

Verify that the specific part number matches the required electrical characteristics, particularly the 3.0 V nominal Zener voltage and 500 mW power rating. Confirm the DO-35 package type aligns with board layout requirements. Ensure the PBFREE suffix indicates compliance with environmental standards if applicable to the design specifications.

Selection Notes

Select this component when circuit designs demand minimal quiescent current consumption alongside precise voltage clamping. The low reverse leakage current makes it suitable for high-impedance nodes. Consider the thermal management capabilities provided by the 500 mW dissipation rating under standard ambient conditions.

Part Context

This device belongs to the 1N4678 through 1N4717 series of silicon Zener diodes manufactured by Central Semiconductor. The series covers a voltage range from 1.8 V to 43 V, all sharing common mechanical outlines and low-leakage design principles tailored for low-power signal processing and reference applications.

Replacement Considerations

Cross-reference other manufacturers' 1N4683 equivalents to ensure compatibility with the 3.0 V nominal voltage and DO-35 package dimensions. Verify that substitute parts meet the same 500 mW power dissipation and low leakage current specifications.