1N5259

Single Zener Diodes Overview

The SMC Diode Solutions 1N5259 is a unidirectional silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 39V with a tolerance of 20%. The device is rated for a maximum power dissipation of 0.5W and operates within a temperature range of -65°C to 200°C. It utilizes a DO-35 glass axial-lead package, providing hermetic sealing for reliability in harsh environments.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for environmental protection
• Double slug type metallurgically bonded design
• Unidirectional voltage regulation capability

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• General purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N5259 part number is widely distributed by multiple semiconductor companies including Microsemi, NXP, and TDK. Confirm that the SMC Diode Solutions variant matches the required DO-35 package and 39V specification before procurement to ensure compatibility with existing designs.

Single Zener Diodes Selection Notes

Select this component when a standard 39V Zener voltage is required in a through-hole axial package. The 0.5W power rating suits low-to-medium current regulation tasks. Ensure the 20% tolerance aligns with circuit requirements, as tighter tolerances are available in other series variants.

Single Zener Diodes Part Context

This component belongs to the broader family of 500mW DO-35 glass Zener diodes. These devices are commonly used in industrial and commercial electronics where reliable voltage clamping is necessary. The DO-35 package is a standard form factor for axial-leaded components, facilitating easy integration into printed circuit boards.

Single Zener Diodes Replacement Considerations

Direct substitutes include the MX1N5259DE3TR-1 and 1N5259B from other manufacturers. Verify pinout compatibility and thermal characteristics when replacing with equivalent parts from different suppliers.