1N5259BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5259BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 39 V. It operates within a power dissipation limit of 0.5 W and features a 5% voltage tolerance. The device utilizes a DO-213AA (MELF) metallurgically bonded glass package, suitable for automated assembly via tape and reel. Electrical characteristics include a test current of 3.2 mA, a maximum dynamic impedance of 80 Ohms at the test point, and a reverse leakage current not exceeding 800 µA. The unit supports an operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass construction in a surface mount MELF package.
• Voltage regulation capability across a broad operating current and temperature range.
• Inherent radiation hardness properties as documented by manufacturer technical notes.
• Non-sensitive to electrostatic discharge events per specified military testing methods.

Single Zener Diodes Applications

• Precision voltage reference circuits requiring stable breakdown characteristics.
• Overvoltage protection stages in sensitive electronic subsystems.
• Clamping applications in signal processing paths.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance grade and RoHS compliance status. Confirm the presence of the TR suffix indicates tape and reel packaging rather than bulk quantities. Ensure the component source aligns with the original manufacturer specifications for reliability requirements.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability environments. The 39 V rating suits applications needing precise regulation near this potential. Consider the low capacitance profile for high-speed circuit interactions where parasitic effects must be minimized.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which serves as the surface mount equivalent to the traditional axial-leaded JEDEC registered 1N5221 to 1N5281 series. The series provides a compact alternative for designs transitioning from through-hole to surface mount technologies while maintaining similar electrical performance profiles.

Single Zener Diodes Replacement Considerations

Direct parameter-equivalent replacements within the same series include 1N5258BUR-1 or 1N5260BUR-1 if voltage adjustments are permissible. Verify package compatibility and thermal resistance values when substituting with other manufacturers' MELF-style Zener diodes.