1N4733AP/TR8

Overview

The Microchip Technology 1N4733AP/TR8 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tight tolerance of ±5%. The component operates in the DO-204AL (DO-41) axial leaded package and dissipates up to 1 W of power. Key electrical characteristics include a maximum reverse leakage current of 5 µA, a Zener impedance of 7 Ohms, and a forward voltage of 1.2 V at 200 mA. It supports a wide operating temperature range from -65 °C to +175 °C and is supplied in reel packaging.

Feature Summary

• Provides stable voltage regulation with a nominal 5.1 V output and ±5% tolerance.
• Capable of handling 1 W power dissipation in an industry-standard axial package.
• Features low reverse leakage current for efficient standby operation.
• Operates reliably across a wide industrial temperature range.

Applications

• General-purpose voltage reference circuits
• Overvoltage protection stages
• Biasing networks in analog signal processing

Procurement Notes

Verify the specific suffix 'AP/TR8' against official Microchip documentation to confirm the exact tape-and-reel quantity and RoHS compliance status. Ensure the ordering unit matches the manufacturer's standard reel size. Cross-reference the datasheet revision date to validate thermal ratings and mechanical dimensions before finalizing procurement specifications.

Selection Notes

Select this component when a precise 5.1 V reference is required with tighter tolerance than standard variants. The axial DO-41 package facilitates through-hole mounting on PCBs or chassis. Consider the 1 W power rating for thermal management in high-current environments. Verify that the 7 Ohm impedance meets the dynamic load requirements of the target circuit design.

Part Context

This part belongs to the 1N47xx series of planar silicon Zener diodes manufactured by Microchip Technology. The 'A' suffix typically denotes the ±5% voltage tolerance variant, while 'P' indicates plastic/epoxy encapsulation in some contexts, though DO-41 is often glass. The '/TR8' suffix specifies the reel packaging format used for automated surface mount or through-hole assembly lines.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4733A parts in DO-41 packages, such as Vishay or Central Semiconductor equivalents. Ensure replacement parts match the 5.1 V nominal voltage, 1 W power rating, and ±5% tolerance. Verify that the alternative component's Zener impedance and leakage current specifications are compatible with the original circuit design.