1N4733AG

Overview

The 1N4733AG is a silicon planar power Zener diode manufactured by Microchip Technology. It provides a nominal Zener voltage of 5.1 V with a tolerance of ±5%. The device is designed for through-hole mounting in a DO-41-2 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 test current of 49 mA. It operates within a temperature range of -65 °C to +175 °C.

Feature Summary

• Provides stable voltage regulation at a nominal 5.1 V reference level
• Utilizes silicon planar technology for reliable unidirectional operation
• Engineered for high thermal stability across extended industrial temperature ranges

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation in power supplies

Procurement Notes

Verify the specific suffix 'AG' against official Microchip documentation to confirm exact manufacturing lot attributes and compliance status. Ensure the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability. Cross-reference the datasheet revision date to validate parameter accuracy before integration into final designs.

Selection Notes

Select this component when a 5.1 V regulated output is required in a through-hole configuration. The 1 W power rating supports moderate current applications. Verify that the circuit design accommodates the specified 7 Ohm dynamic impedance and 5 µA leakage limits. Confirm that the operating environment remains within the -65 °C to +175 °C junction temperature specifications.

Part Context

This part belongs to the standard 1N47 series of silicon Zener diodes, widely used for voltage clamping and regulation. The 'A' suffix typically denotes a tighter voltage tolerance compared to standard variants, while 'G' often indicates lead-free or specific packaging compliance. It serves as a fundamental discrete semiconductor component in analog and mixed-signal circuit design.

Replacement Considerations

Compatible substitutes include the 1N4733A (Microchip) and 1N4733A-TAP (Vishay). These alternatives share the 5.1 V nominal voltage, 1 W power dissipation, and DO-41 package form factor. Verify that the substitute's Zener impedance and leakage current parameters meet the original design requirements.