1N4689 TR PBFREE

Overview

The Central Semiconductor Corp 1N4689 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 5.1 V with a 5% tolerance, tested at a 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 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 5% tolerance across the specified voltage range.
• Capable of operation in high-temperature environments up to +200 °C junction temperature.

Applications

• Low-level voltage reference circuits
• Precision voltage regulation in sensitive electronics
• Protection against overvoltage in low-current signal paths

Procurement Notes

Verify that the ordering suffix 'PBFREE' confirms lead-free plating compliance as per manufacturer standards. Ensure the procurement specification explicitly requires the DO-35 axial package and 500 mW power rating. Confirm that the application environment remains within the -65 °C to +200 °C operating temperature limits defined in the datasheet.

Selection Notes

Select this component when circuit design demands minimal quiescent current draw during regulation. The 50 µA test current makes it suitable for battery-powered or energy-efficient systems where standard Zener diodes would introduce excessive load. Verify that the 5% voltage tolerance meets the precision requirements of the target application.

Part Context

This part belongs to the 1N4678 through 1N4717 series of low-level silicon Zener diodes from Central Semiconductor. The series covers voltages from 1.8 V to 43 V, all sharing similar low-current operational characteristics and the DO-35 package form factor.

Replacement Considerations

Substitutes must match the 5.1 V nominal voltage, 50 µA test current, and 500 mW power dissipation. Compatible replacements include other manufacturers' 1N4689 variants in the DO-35 package that adhere to the same electrical specifications.

FAQ

What is the test current used to specify the Zener voltage for the 1N4689?

The Zener voltage is specified at a test current (IZT) of 50 µA.

Does the 1N4689 support surface mount installation?

No, the 1N4689 is housed in a DO-35 case, which is an axial leaded through-hole package.