1N5239/TR

Single Zener Diodes Overview

The Microchip Technology 1N5239/TR is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a tolerance of ±10%. The device operates in the DO-204AH (DO-35) axial leaded package, suitable for through-hole mounting. It dissipates up to 500 mW of power and maintains functionality across an extended temperature range from -65°C to +175°C junction temperature. Key electrical characteristics include a maximum reverse leakage current of 3 µA at 7 V, a Zener impedance of 10 Ohms, and a test current of 20 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a 9.1 V Zener reference point.
• Capable of handling high thermal loads with a 500 mW power dissipation rating.
• Engineered for reliable operation in extreme environments spanning -65°C to +175°C.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise regulation.
• Overvoltage protection stages in electronic systems.
• Clamping applications for transient voltage suppression.

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration when ordering, as packaging variations exist within the product line. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as historical data indicates potential non-compliance for certain variants. Ensure the procurement channel sources genuine Microchip Technology components to guarantee performance specifications and reliability standards are met.

Single Zener Diodes Selection Notes

Select this component when a robust, high-temperature Zener diode is required for through-hole designs. The 9.1 V output aligns with standard logic levels, while the wide operating temperature range supports demanding industrial conditions. Consider the 10 Ohm impedance for circuit stability requirements and ensure the 500 mW power rating accommodates the expected current draw without exceeding thermal limits.

Single Zener Diodes Part Context

This part belongs to the popular 1N5221 through 1N5281B series of 0.5-watt Zener Voltage Regulators. The series offers a broad selection of voltages from 2.4 to 200 volts in standard tolerances. These glass axial-leaded devices are widely used in general-purpose regulation tasks and are available in various military screening levels depending on the specific prefix identifiers applied to the part number.

Single Zener Diodes Replacement Considerations

The 1N5239B serves as a parameter-equivalent alternative offering tighter ±5% voltage tolerance. Verify that the replacement package matches the DO-204AH form factor and confirm that the higher temperature rating of the B variant (+200°C) does not introduce compatibility issues with existing board layouts.