1N5238

Single Zener Diodes Overview

The Microchip Technology 1N5238 is a single Zener diode designed for voltage regulation and reference applications. It features an 8.7 V nominal Zener voltage with a ±5% tolerance, ensuring precise voltage control in circuit designs. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Packaged in the DO-204AH (DO-35) axial through-hole format, it exhibits a maximum Zener impedance of 8 Ohms and a forward voltage of 1.5 V at 200 mA. Reverse leakage current is specified at 3 µA when tested at 6.2 V.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation with tight ±5% tolerance for precision reference circuits
• Supports extended thermal operation up to +175°C junction temperature for harsh environments
• Utilizes low-impedance characteristics to maintain voltage stability under varying load conditions

Single Zener Diodes Applications

• Voltage reference sources in analog signal processing circuits
• Overvoltage protection stages in power supply inputs
• Clamping applications in transient voltage suppression networks

Single Zener Diodes Procurement Notes

Verify the specific suffix designation during procurement, as packaging variations such as tape-and-reel or bulk formats may exist. Confirm RoHS compliance status explicitly, as historical production runs may differ from current manufacturing standards. Ensure the ordering part number matches the required package style and tolerance grade to avoid functional mismatches in final assembly.

Single Zener Diodes Selection Notes

Select this component when a through-hole axial package is required for high-temperature reliability. The 500 mW power rating suits moderate current regulation tasks. Verify that the 8.7 V breakdown voltage aligns with the target circuit's reference requirements. Consider the 8 Ohm impedance for dynamic load performance. Ensure the operating environment stays within the specified -65°C to +175°C thermal limits.

Single Zener Diodes Part Context

This component belongs to the standard 1N52xx series of glass-passivated Zener diodes manufactured by Microchip Technology. The series provides a wide range of voltage options for general-purpose regulation. The 1N5238 specifically addresses the 8.7 V segment, offering a balance between voltage precision and power handling capability in a traditional axial leaded package suitable for legacy and robust industrial designs.

Single Zener Diodes Replacement Considerations

The 1N5238B serves as a parameter-equivalent alternative from Microchip Technology. Other manufacturers may offer cross-reference parts with identical electrical specifications but different package tolerances or thermal ratings. Verify pinout compatibility and physical dimensions before substituting.