1N4625 TR PBFREE

Overview

The Central Semiconductor Corp 1N4625 TR PBFREE is a silicon Zener diode designed for low leakage, low current, and low noise applications. It operates within the 1N4614 through 1N4627 series, featuring a nominal Zener voltage of 5.1 V with a 5% tolerance range from 4.845 V to 5.355 V. The device dissipates up to 250 mW at 25°C and utilizes a DO-35 axial leaded package. Key electrical characteristics include a maximum reverse current of 10 µA at 3.0 V, a maximum Zener impedance of 10 Ω at the test current of 250 µA, and a noise density of 2.0 µV/Hz at 250 µA.

Feature Summary

• Engineered specifically for low leakage, low current, and low noise operational environments
• Provides precise voltage regulation with a tight 5% tolerance band around the nominal rating
• Constructed using silicon technology optimized for stable performance in sensitive circuits

Applications

• Low noise reference voltage generation
• Precision voltage regulation in low current circuits
• Signal conditioning requiring minimal leakage current

Procurement Notes

Verify that the ordering suffix PBFREE confirms lead-free plating compliance as specified by the manufacturer. Ensure the procurement matches the standard DO-35 axial package configuration. Confirm the specific lot marking code C4625 aligns with the datasheet requirements for identification. Check for any custom screening or special wafer diffusion requests if required for the application environment.

Selection Notes

Select this component when circuit design demands low noise performance alongside stable voltage regulation. The 250 mW power dissipation rating suits applications with moderate current requirements. Consider the DO-35 package for through-hole mounting constraints. Evaluate the 10 µA maximum reverse current limit against system leakage tolerances before finalizing the selection.

Part Context

This part belongs to the Central Semiconductor 1N4614 through 1N4627 series of silicon Zener diodes. The series covers voltage ratings from 1.8 V to 6.2 V, all sharing similar low-noise and low-leakage design goals. These devices are intended for use where standard Zener diodes might introduce excessive noise or current draw into sensitive analog sections of a system.

Replacement Considerations

Direct replacements must match the 5.1 V nominal voltage, 250 mW power rating, and DO-35 package. Verify that substitute components meet the same low noise density (2.0 µV/Hz) and reverse leakage specifications to maintain circuit performance integrity.