1N4732ATR

Overview

The onsemi 1N4732ATR is a silicon planar Zener diode designed for voltage regulation and reference applications. It utilizes the DO-204AL (DO-41) axial leaded package, suitable for through-hole mounting. The device provides a nominal Zener voltage of 4.7 V with a tolerance of ±5%. It is rated for a maximum power dissipation of 1 W at an ambient temperature of 50°C. Key electrical characteristics include a maximum reverse leakage current of 10 µA at 1 V and a forward voltage drop of 1.2 V at 200 mA. The component operates within a junction temperature range of -65°C to +175°C and features a maximum dynamic impedance of 8 Ω.

Feature Summary

• Utilizes silicon planar technology for robust voltage regulation performance.
• Provides stable reference voltage with tight manufacturing tolerance.
• Designed for high thermal stability across extended operating temperatures.

Applications

• Voltage regulation in power supply circuits
• Voltage reference sources in analog signal processing
• Overvoltage protection in electronic systems

Procurement Notes

Verify that the ordering suffix 'ATR' corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm RoHS compliance status and ensure the manufacturer documentation aligns with the requested environmental standards before finalizing procurement orders.

Selection Notes

Select this component when a standard 4.7 V regulation point is required in a through-hole design. Ensure the circuit layout accommodates the DO-41 package dimensions and that the expected power dissipation remains within the 1 W limit under worst-case thermal conditions.

Part Context

This part belongs to the widely recognized 1N47xx series of Zener diodes, which serves as a fundamental component class for discrete voltage control. The 'A' suffix typically denotes the ±5% tolerance grade, while 'TR' indicates reel packaging. This specific variant represents the commercial-grade axial leaded implementation produced by onsemi.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4732A specification in the DO-41 package. Verify that substitute parts match the 4.7 V nominal voltage, 1 W power rating, and ±5% tolerance to ensure functional compatibility without redesigning the host circuit.