1N5261B

Single Zener Diodes Overview

The Fairchild Semiconductor 1N5261B is a single general-purpose Zener diode with a nominal voltage of 47 V and a maximum power dissipation of 500 mW. It features a ±5% tolerance, a test current of 2.7 mA, and a maximum impedance of 105 Ω. The device supports through-hole mounting in an SOD-27 package (DO-35) with two pins. It operates within a temperature range up to 175°C and exhibits a typical voltage temperature coefficient of 0.1%/K.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 47 V level for circuit protection and reference applications.
• Designed for automated assembly processes using planar die construction in a glass axial leaded package.

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Overvoltage protection components
• Reference voltage sources

Single Zener Diodes Procurement Notes

Verify the manufacturer designation carefully, as the 1N5261B part number is widely produced by multiple semiconductor vendors including Microchip Technology and Vishay. Confirm that the specific batch matches the required package style and compliance standards before procurement. Ensure the sourcing channel provides original manufacturer documentation to validate authenticity and technical specifications.

Single Zener Diodes Selection Notes

Select this component when a 47 V Zener voltage with 500 mW power handling is required in a through-hole axial package. Consider the 105 Ω impedance limit for dynamic regulation needs. Verify thermal management capabilities for operation near the 175°C junction temperature limit. Compare alternative manufacturers if specific automotive or industrial certifications are mandated for the application environment.

Single Zener Diodes Part Context

The 1N5261B belongs to the standard 1N52xx series of silicon Zener diodes, which covers a wide range of voltage ratings from low values up to higher voltages like 68 V. This series is characterized by its robust glass DO-35 package and suitability for general-purpose voltage regulation tasks across various consumer and industrial electronics designs.

Single Zener Diodes Replacement Considerations

Equivalent parts include the Vishay 1N5261B-TR and Microchip Technology 1N5261BMS. These alternatives share identical electrical characteristics and package dimensions, allowing for direct substitution in existing designs without circuit modification.