1N5259

Single Zener Diodes Overview

The Microchip Technology 1N5259 is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 39 V with a standard tolerance of 5%. The device operates within a power dissipation rating of 500 mW and utilizes a DO-7 glass axial-leaded package. Key electrical characteristics include a maximum reverse leakage current of 100 nA, a Zener impedance of 25 Ohms, and a forward voltage of 1.1 V at 200 mA. The component supports a wide operating temperature range from -65 °C to +200 °C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a 39 V Zener reference in a rugged glass axial-leaded package.
• Features low reverse leakage current and defined Zener impedance for precise circuit control.
• Capable of withstanding high junction temperatures up to 200 °C for demanding environments.

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in measurement systems
• Overvoltage protection in electronic assemblies

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N5259 designation has been produced by multiple vendors including NTE and Microsemi/Microchip. Confirm that the required package matches the DO-7 specification and ensure the voltage tolerance aligns with the 5% standard. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Single Zener Diodes Selection Notes

Select this component when a 39 V regulation point is required in a through-hole design. The DO-7 package offers higher thermal mass compared to smaller axial packages. Ensure the circuit current does not exceed the limits imposed by the 500 mW power dissipation rating at the maximum operating temperature.

Single Zener Diodes Part Context

This part belongs to the widely used 1N52xx series of 500 mW Zener diodes. The series covers a broad voltage range from 2.4 V to 200 V. The 1N5259 specifically addresses the 39 V segment, serving as a standard industry reference for mid-range voltage stabilization in discrete semiconductor designs.

Single Zener Diodes Replacement Considerations

The Microchip Technology 1N975B-1 is a confirmed parameter-equivalent replacement. Other manufacturers may offer compatible parts under the same JEDEC numbering system, provided the package and electrical tolerances match.