1N5238B

Single Zener Diodes Overview

The onsemi 1N5238B is a single silicon Zener diode housed in an axial lead DO-204AH (SOD-27) glass package. It provides a nominal Zener voltage of 8.7 V with a tolerance of ±5%. The device dissipates up to 500 mW at 25°C and operates within a junction temperature range of −65°C to +200°C. Electrical characteristics include a maximum dynamic impedance of 8 Ω, a knee impedance of 600 Ω, and a reverse leakage current of 3 μA at 6.5 V.

Single Zener Diodes Feature Summary

• Hermetically sealed double slug type glass construction for environmental stability
• Metallurgically bonded internal design ensuring robust mechanical integrity
• Corrosion-resistant external surfaces with readily solderable leads

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement instrumentation

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm shipping format and material composition. Confirm that the component meets all required electrical tolerances and thermal ratings for the intended operating environment before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a precise 8.7 V reference is required within a standard axial lead form factor. Ensure the application circuit limits power dissipation to 500 mW and maintains the junction temperature within the specified −65°C to +200°C range to guarantee reliable long-term operation.

Single Zener Diodes Part Context

This part belongs to the 1N5221B through 1N5252B series of 500 mW Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V in standard 5% or 10% tolerances, utilizing the same hermetically sealed glass axial-lead package construction.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5238B equivalents to verify pinout compatibility and ensure identical voltage tolerance and power dissipation ratings are met for drop-in replacement scenarios.