1N4739AE3/TR13

Overview

The Microchip Technology 1N4739AE3/TR13 is a single silicon Zener diode designed for voltage regulation and protection applications. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The device operates in an axial DO-204 (DO-41) package, dissipating up to 1 W of power. Key electrical parameters include a maximum reverse leakage current of 10 µA, a Zener impedance of 5 Ohms at a test current of 28 mA, and a specified Zener test current of 100 mA. The component supports an operating temperature range from -65 °C to +150 °C.

Feature Summary

• Provides stable voltage reference and regulation with precise 9.1 V output
• Constructed using silicon technology for reliable performance in harsh environments
• Designed for through-hole mounting in standard axial packages

Applications

• Voltage regulation circuits requiring a 9.1 V reference
• Over-voltage protection stages
• Clamping applications in electronic systems

Procurement Notes

Verify the specific manufacturer source, as the 1N4739 designation is produced by multiple vendors including onsemi and Vishay. Confirm that the suffix TR13 indicates reel packaging and that the E3 suffix denotes lead-free compliance. Ensure the selected variant matches the required ±5% tolerance and 1 W power dissipation rating for your design.

Selection Notes

Select this component when a 9.1 V Zener reference is needed with ±5% accuracy. Compare against other manufacturers' versions if supply chain diversity is required. Note that while Microchip offers this part, other brands provide similar specifications with potentially different temperature ratings or packaging options. Verify thermal management requirements for 1 W dissipation in the final assembly.

Part Context

This component belongs to the standard 1N47xx series of Zener diodes, widely used for basic voltage regulation. The AE3/TR13 suffix specifies the Microchip Technology variant with axial leaded packaging in tape-and-reel format. It serves as a direct functional replacement for generic 1N4739A devices, maintaining compatibility with standard DO-41 footprints.

Replacement Considerations

Direct substitutes include the 1N4739A from onsemi and the 1N4739Ae3/TR13 from Microchip. Other equivalents like the Vishay 1N4739A-TR share similar electrical characteristics. Verify pinout compatibility and ensure the alternative supplier's datasheet confirms the 9.1 V nominal voltage and 1 W power rating.