1N4707 BK PBFREE

Overview

The Central Semiconductor Corp 1N4707 BK PBFREE is a silicon Zener diode designed for low-level applications requiring extremely low operating current and low leakage. It features a nominal Zener voltage of 20 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 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.
• Features a 5% voltage tolerance for precise regulation in low-power circuits.
• Capable of operation across an extended junction temperature range from -65°C to +200°C.

Applications

• Low-level voltage reference circuits
• Precision voltage regulation
• Low-current protection applications

Procurement Notes

Verify that the specific part number matches the required electrical characteristics, particularly the 20V nominal Zener voltage and 500mW power rating. Confirm the DO-35 package style aligns with board layout requirements. Ensure the Pb-free suffix corresponds to environmental compliance needs. Cross-reference the marking code C4707 for physical identification during assembly.

Selection Notes

Select this component when circuit design demands minimal quiescent current consumption alongside stable voltage regulation. The low test current of 50μA makes it suitable for battery-powered or energy-sensitive systems. Verify that the maximum reverse leakage current of 0.01μA meets the noise and isolation requirements of the specific application environment.

Part Context

This component belongs to the 1N4678 through 1N4717 series of low-level silicon Zener diodes manufactured by Central Semiconductor. The series covers a voltage range from 1.8V to 43V, all sharing common mechanical outlines and low-power specifications. The 1N4707 specifically addresses the 20V segment of this standardized product line.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4707 variants meeting the same 20V/500mW/DO-35 specifications. Ensure replacement parts maintain the 50μA test current requirement to preserve low-leakage performance characteristics.

FAQ

What is the maximum reverse leakage current for the 1N4707?

The maximum reverse leakage current is specified as 0.01 μA at the rated reverse voltage.

How is the Zener voltage tolerance defined for this device?

The device maintains a 5% tolerance around the nominal 20V Zener voltage, ranging from 19.00V to 21.00V.