1N5239A/TR

Single Zener Diodes Overview

The Microchip Technology 1N5239A/TR is a 500 mW glass axial-lead Zener diode housed in a DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 9.1 V with a ±10% tolerance, indicated by the 'A' suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse leakage current of 3 µA at 7 V. Key electrical parameters include a Zener impedance of 10 Ohms at a test current of 20 mA and a forward voltage of 1.5 V maximum at 200 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features hermetically sealed glass axial-lead construction for durability
• Includes flexible mounting terminals compatible with standard through-hole processes

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in power supply designs
• Clamping applications for transient voltage suppression

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm tolerance and packaging details. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Confirm that the DO-35 package dimensions align with your PCB footprint specifications before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V regulation point is required with moderate precision. The DO-35 package suits through-hole layouts where space allows. Consider the thermal derating curve for high ambient temperatures to ensure the 500 mW rating remains sufficient for the application's power dissipation needs.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V. The 'TR' suffix indicates the device is supplied in tape and reel packaging, facilitating automated assembly processes.

Single Zener Diodes Replacement Considerations

Consult the official datasheet for parameter-equivalent alternatives within the same series or from other manufacturers. Verify that any substitute matches the 9.1 V nominal voltage, 500 mW power rating, and DO-35 package outline to ensure mechanical and electrical compatibility.