1N5239B-TR

Single Zener Diodes Overview

The Vishay 1N5239B-TR is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial lead package. It provides a nominal Zener voltage of 9.1 V with a standard tolerance of ±5%. The device operates at a test current of 20 mA and dissipates up to 500 mW of power. Key electrical characteristics include a maximum dynamic resistance of 10 Ω, a reverse leakage current of 3 μA at 7 V, and a typical temperature coefficient of 0.068 %/K. It supports junction temperatures up to 175 °C.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Features a hermetically sealed glass DO-35 axial lead package
• Provides stable reference voltages with low dynamic impedance

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code includes the -TR suffix to confirm taped and reeled packaging. Ensure the B suffix is present to match the specified ±5% voltage tolerance. Confirm the component meets RoHS compliance requirements for your specific manufacturing process before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V reference is required in an axial lead package. The 500 mW power rating suits general-purpose applications. Verify that the 10 Ω dynamic impedance meets circuit sensitivity requirements. Consider thermal derating if ambient temperatures exceed 25 °C.

Single Zener Diodes Part Context

This part belongs to the Vishay 1N5221 to 1N5267 series of small signal Zener diodes. The series covers a wide range of nominal voltages from 2.4 V to 75 V. All devices share the same DO-35 package and fundamental planar construction principles.

Single Zener Diodes Replacement Considerations

Cross-reference other manufacturers' 1N5239B parts for pin-compatible replacements. Verify that substitute components maintain the 9.1 V nominal voltage and 500 mW power dissipation limits. Check that the replacement package matches the DO-35 dimensions for proper board fit.