1N4709 BK PBFREE

Overview

The Central Semiconductor Corp 1N4709 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 24 V with a 5% tolerance, tested at 50 μA. The device dissipates up to 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 across the specified voltage range.
• Capable of handling high thermal stress with an extended junction temperature rating up to +200°C.

Applications

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

Procurement Notes

Verify the specific ordering suffix requirements when sourcing this component. The 'BK' designation indicates bulk packaging, while 'PBFREE' confirms compliance with lead-free plating standards. Confirm availability directly with Central Semiconductor or authorized distributors, as stock levels may vary by region.

Selection Notes

Select this component for designs prioritizing minimal quiescent current consumption alongside precise voltage clamping. Ensure the circuit's power dissipation does not exceed 500 mW under worst-case thermal conditions. Verify that the DO-35 package dimensions align with the target PCB layout constraints.

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 50 μA test currents and 5% tolerance specifications.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4709 variants meeting the same 24 V nominal voltage, 500 mW power rating, and DO-35 package outline. Cross-referencing datasheets for reverse leakage and impedance parameters is recommended to ensure functional equivalence.

FAQ

What is the maximum reverse leakage current for the 1N4709?

The maximum reverse leakage current is 0.01 μA, measured at the specified reverse voltage.

How is the Zener voltage tolerance defined for this device?

The device maintains a strict 5% tolerance on its nominal Zener voltage, which is 24 V in this case.