1N5261

Single Zener Diodes Overview

The Microchip Technology 1N5261 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 47 V with a maximum power dissipation of 0.5 W. The device is available in multiple package configurations, including the DO-35 axial leaded (DO-204AH) and the DO-213AA surface mount MELF format. Tolerance options include ±5% and ±10%. Operating temperatures range from -65°C to +175°C junction temperature. The component is unidirectional and constructed using glass encapsulation.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Offers hermetically sealed metallurgically bonded construction in surface mount variants
• Available in both through-hole axial and surface mount package formats

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• General purpose voltage regulation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix letter on the part number to confirm the exact tolerance grade, as the base 1N5261 designation covers multiple variants. Confirm whether the required version is RoHS compliant or MIL-spec screened, as availability differs between commercial and military grades. Check the package type against the design requirements, ensuring compatibility with either DO-35 through-hole or DO-213AA surface mount footprints before ordering.

Single Zener Diodes Selection Notes

Select the appropriate tolerance suffix based on circuit precision requirements, noting that tighter tolerances may carry different suffixes. Ensure the chosen package matches the assembly method, distinguishing between the standard axial leaded DO-35 and the surface mount DO-213AA. Verify thermal management capabilities, as the 0.5 W rating must be sufficient for the intended application's power dissipation needs under all operating conditions.

Single Zener Diodes Part Context

The 1N5261 belongs to the widely used JEDEC registered 1N5221 through 1N5281 series of Zener diodes. This family provides a comprehensive range of voltage values from 2.4 V to 200 V. Microchip Technology manufactures these components to meet both commercial and high-reliability standards, offering flexibility in packaging and screening levels to suit diverse electronic design requirements.

Single Zener Diodes Replacement Considerations

Direct equivalents include the NXP 1N5261B and Microchip 1N5261B. Surface mount replacements are available within the same series, such as the 1N5261BUR-1 in the DO-213AA package. Ensure substitute parts match the original voltage, power rating, and package style.