1N4733A-1/TR

Overview

The Microchip Technology 1N4733A-1/TR is a single silicon planar power Zener diode designed for voltage regulation and clipping applications. It features a nominal Zener voltage of 5.1 V with a tolerance of ±5%. The device operates in the DO-204AL (DO-41) through-hole package, dissipating up to 1 W of power. Key electrical parameters include a maximum reverse leakage current of 10 µA, a Zener impedance of 7 Ω, and a test current of 49 mA. It supports an operating temperature range from -65 °C to +200 °C.

Feature Summary

• Provides stable voltage regulation using silicon planar technology
• Engineered for high-power dissipation in stabilizing and clipping circuits
• Offers precise voltage tolerance for reliable reference applications

Applications

• Voltage stabilization circuits
• Signal clipping and limiting
• Reference voltage generation

Procurement Notes

Verify the specific suffix '-1' against official Microchip documentation to confirm if it denotes a distinct mechanical or testing variation compared to standard 1N4733A parts. Confirm RoHS compliance status as datasheets may vary by revision. Ensure the DO-41 package dimensions match your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a robust through-hole Zener diode is required for high-power voltage regulation. The 1W rating allows for higher current handling than smaller packages. Consider the wide temperature range (-65 °C to +200 °C) for industrial or harsh environment designs where standard commercial grade parts may fail.

Part Context

This part belongs to the 1N47xxA series of Zener diodes, a widely used family for general-purpose voltage regulation. The 'TR' suffix typically indicates tape and reel packaging, while '-1' may indicate a specific manufacturing lot or variant defined by Microchip. It serves as a direct replacement for similar 5.1V 1W Zener diodes from other manufacturers like Vishay or onsemi, provided pinouts and tolerances align.

Replacement Considerations

Direct substitutes include Vishay 1N4733A-TR and onsemi 1N4733A. Verify that alternative sources offer the same 5.1V nominal voltage and 1W power rating. Ensure the replacement package matches the DO-41 form factor for board compatibility.