1N4679 BK PBFREE

Overview

The 1N4679 BK PBFREE is a silicon Zener diode from the Central Semiconductor 1N4678 series, designed for low-level applications requiring extremely low operating current and leakage. It features a nominal Zener voltage of 2.0 V with a 5% tolerance range (1.900 V to 2.100 V) at a test current of 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 a DO-35 axial leaded package.

Feature Summary

• Designed for applications requiring extremely low operating current and low leakage characteristics
• Provides stable voltage regulation with a tight 5% tolerance on Zener voltage
• Capable of operation across an extended temperature range up to +200°C

Applications

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

Procurement Notes

Verify the specific ordering suffix requirements when purchasing. The 'PBFREE' designation indicates lead-free plating compliance. Confirm that the 'BK' suffix corresponds to the standard bulk packaging configuration as defined by the manufacturer's current documentation. Ensure compatibility with RoHS directives if required by your assembly process.

Selection Notes

Select this component when circuit design demands minimal quiescent current consumption alongside precise low-voltage regulation. The 50 μA test current specification makes it suitable for battery-powered or energy-efficient designs where standard Zener diodes would introduce excessive drain. Verify that the 500 mW power rating aligns with the thermal environment of the final application.

Part Context

This part belongs to the 1N4678 through 1N4717 series of low-level silicon Zener diodes manufactured by Central Semiconductor Corp. The series covers a voltage range from 1.8 V to 43 V, all sharing similar mechanical outlines and electrical testing conditions. These devices are standardized for use in general-purpose low-power electronic circuits requiring reliable voltage clamping or referencing.

Replacement Considerations

Cross-reference with other manufacturers offering 1N4679 equivalents in DO-35 packages. Ensure replacement parts match the 2.0 V nominal voltage, 5% tolerance, and 500 mW power dissipation ratings. Verify that alternative components support the same low leakage current specifications and operating temperature ranges.