1N4733CGE3

Overview

The Microchip Technology 1N4733CGE3 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 ±2%. The device is rated for a maximum power dissipation of 1 W and operates within an extended temperature range from -65 °C to +175 °C. Packaged in the DO-41 axial leaded format, it exhibits a maximum reverse leakage current of 5 µA at 1 V and a Zener impedance of 7 Ohms at the test current of 49 mA.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the 5.1 V Zener voltage.
• Capable of handling high thermal loads with a 1 W power dissipation rating.
• Engineered for extreme environmental reliability with operation up to +175 °C junction temperature.
• Utilizes a hermetically sealed glass DO-41 package for robust physical protection.

Applications

• Precision voltage reference circuits requiring tight tolerance stability
• Overvoltage protection stages in industrial control systems
• Clamping applications in harsh environment electronic assemblies

Procurement Notes

Verify that the specific suffix CGE3 confirms the ±2% tolerance variant, as standard 1N4733 devices often carry wider tolerances. Ensure the procurement specification explicitly requires the Microchip Technology manufacturer source to guarantee the documented electrical parameters and hermetic sealing standards are met for critical designs.

Selection Notes

Select this component when circuit design demands superior voltage accuracy compared to standard ±5% or ±10% Zener diodes. The wide operating temperature range makes it suitable for aerospace or military-grade equipment where standard commercial parts would fail. Confirm that the DO-41 through-hole footprint aligns with the PCB layout requirements.

Part Context

This part belongs to the 1N4733 series of planar silicon Zener diodes manufactured by Microchip Technology. While the base 1N4733 designation typically implies a ±10% tolerance, the CGE3 suffix specifically denotes the tighter ±2% precision grade. The series is widely recognized for its reliability in power supply regulation and signal conditioning roles across various semiconductor applications.

Replacement Considerations

Direct substitutes include the 1N4733A (±5% tolerance) if looser accuracy is acceptable, or other manufacturers' equivalents like the 1N4733B (±10%). For identical ±2% performance, verify cross-brand availability of precision variants in the DO-41 package with matching 1 W power ratings.

FAQ

What is the difference between the 1N4733 and 1N4733CGE3?

The 1N4733CGE3 specifies a ±2% Zener voltage tolerance, whereas the standard 1N4733 typically carries a ±10% tolerance. Both share the same 5.1 V nominal voltage and 1 W power rating.

Is the 1N4733CGE3 RoHS compliant?

Yes, the 'E3' suffix in the part number indicates that the device is lead-free and RoHS compliant according to Microchip Technology specifications.