1N4734AE3

Overview

The Microchip Technology 1N4734AE3 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.6 V with a tolerance of 5%. The device is rated for a power dissipation of 1 W and operates within a temperature range of -65 °C to +175 °C. Packaged in the DO-204AH axial leaded format, it exhibits a maximum reverse leakage current of 5 uA and a dynamic impedance of 5 Ohms at a test current of 45 mA. The 'e3' suffix indicates compliance with RoHS standards.

Feature Summary

• Provides stable voltage regulation using a single silicon junction configuration.
• Features hermetic glass encapsulation suitable for high-reliability environments.
• Offers a wide operating temperature range extending up to 175 °C.

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in sensitive electronic systems
• Power supply output regulation modules

Procurement Notes

Verify the specific manufacturer source, as the 1N4734AE3 designation appears across multiple semiconductor entities including Microsemi and Microchip Technology. Confirm that the 'e3' suffix strictly denotes RoHS compliance and lead-free composition for your specific supply chain requirements. Ensure the package matches the DO-204AH specification to guarantee mechanical fitment on the target printed circuit board.

Selection Notes

Select this component when a 5.6 V regulated potential is required with a 1 W power handling capability. The DO-204AH through-hole package facilitates manual assembly or standard wave soldering processes. Consider the 5% voltage tolerance and 5 Ohm dynamic impedance characteristics to ensure compatibility with the precision demands of the intended load regulation circuit design.

Part Context

This part belongs to the widely recognized 1N47xx series of 1 Watt Zener diodes. These components are standardized JEDEC devices available from various manufacturers under identical electrical specifications. The 1N4734 variant specifically targets the 5.6 Volt segment of this extensive family, serving as a fundamental building block for linear voltage regulation and transient suppression tasks.

Replacement Considerations

Direct replacements include the 1N4734A (non-RoHS) and the 1N4734G (glass MELF). Verify that substitute parts maintain the 5.6 V nominal voltage and 1 W power rating. Cross-reference package dimensions if transitioning between axial leads and surface mount formats.