2N5238

Overview

The Microchip Technology 2N5238 is a single Zener diode designed for voltage regulation and reference applications. It features a nominal Zener voltage of 8.7 V with a tolerance of ±10%. The device is rated for a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Key electrical characteristics include a maximum Zener impedance (Zzt) of 8 Ohms, a reverse leakage current of 3 µA at 6.5 V, and a forward voltage of 1.1 V at 200 mA. It is housed in the DO-213AB (MELF) surface-mount package.

Feature Summary

• Provides stable voltage regulation with high accuracy tolerance
• Capable of operation in extreme temperature environments up to 175°C
• Surface-mount MELF packaging for compact circuit integration

Applications

• Precision voltage reference circuits
• Over-voltage protection stages
• Voltage clamping applications

Procurement Notes

Verify the specific suffix and manufacturing date code upon ordering, as these factors influence compliance status and physical attributes. Confirm that the required tolerance and thermal specifications align with the design constraints before finalizing procurement. Ensure the supplier provides authentic documentation from Microchip Technology to guarantee component integrity and traceability.

Selection Notes

Select this component when a surface-mount Zener diode with a wide operating temperature range is required. The 8.7 V nominal voltage and 500 mW power rating make it suitable for low-power regulation tasks. Consider the DO-213AB package dimensions for PCB layout compatibility. Verify that the ±10% tolerance meets the system's precision requirements compared to tighter tolerance alternatives.

Part Context

The 2N5238 belongs to Microchip Technology's discrete semiconductor portfolio, specifically within the Zener diode category. It shares similar electrical parameters with other 8.7 V Zener devices but is distinguished by its MELF surface-mount form factor. This packaging offers advantages in automated assembly and space-constrained designs compared to traditional axial leaded packages.

Replacement Considerations

The CDLL5238A is a verified parameter-equivalent replacement offering identical electrical specifications in the same DO-213AB package. Other equivalent parts may exist but require verification of package type and tolerance levels to ensure direct interchangeability without circuit modification.