1N4734A

Overview

The onsemi 1N4734A is a single-channel general-purpose Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.6 V with a standard tolerance of 5%. The device supports a maximum power dissipation of 1 W and utilizes a DO-41 through-hole package. Constructed from silicon, it operates within a temperature range of -65 °C to +200 °C. Key electrical characteristics include a test current of 45 mA and a maximum reverse leakage current of 5 µA at voltages above 11 V.

Feature Summary

• Provides stable voltage regulation across a wide operating temperature range
• Features glass passivated die construction for enhanced reliability
• Offers low inductance and minimal reverse leakage current

Applications

• General voltage regulation circuits
• Reference voltage sources
• Overvoltage protection stages

Procurement Notes

Verify the specific manufacturer source, as the 1N4734A JEDEC designation is utilized by multiple vendors including onsemi, Microsemi, and Vishay. Confirm that the procurement order specifies the desired package material (glass or plastic) and compliance status, such as RoHS, to ensure alignment with project requirements. Cross-reference datasheets for exact thermal and electrical tolerances before finalizing supply agreements.

Selection Notes

Select this component when a standard 5.6 V reference point is required in through-hole designs. Ensure the circuit can handle the 1 W power dissipation limit under worst-case conditions. Consider the DO-41 package dimensions for board layout constraints. Verify that the 5% voltage tolerance meets the precision requirements of the target application without necessitating tighter grading.

Part Context

This part belongs to the widely recognized 1N47 series of 1-watt Zener diodes. The series covers an extensive voltage selection ranging from 3.3 V to 100 V. The 1N4734A specifically addresses the 5.6 V segment of this lineup, serving as a common industry-standard component for basic electronic design needs.

Replacement Considerations

Equivalent parts include the Microsemi MQ1N4734DPTR and Vishay 1N4734A-TR. These alternatives share the same JEDEC base number and functional specifications but may differ in package material or screening levels.