1N5228

Single Zener Diodes Overview

The Microchip Technology 1N5228 is a silicon unidirectional Zener voltage regulator diode designed for through-hole mounting. It features a DO-35 (DO-204AH) glass axial package with a maximum power dissipation of 500 mW. The device provides a nominal Zener voltage of 3.9 V with a standard tolerance of 5%. Key electrical characteristics include a maximum reverse leakage current of 1 µA and a Zener impedance of 23 Ohms at a test current of 20 mA. The component operates within a temperature range of -65°C to +200°C, offering stable voltage regulation for precision circuit applications.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation using a metallurgically bonded glass junction structure
• Offers high thermal stability across an extended operating temperature range
• Features low reverse leakage current for efficient standby performance
• Designed for reliable operation in harsh environmental conditions

Single Zener Diodes Applications

• Precision voltage reference circuits
• Overvoltage protection stages
• Biasing networks in analog signal processing
• Clamping applications in digital logic interfaces

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N5228 designation has been transferred between multiple semiconductor vendors including Microsemi and Microchip Technology. Confirm that the received components match the required JEDEC registration standards and package dimensions. Ensure that the voltage tolerance and leakage current specifications align with your design requirements before integration into production systems.

Single Zener Diodes Selection Notes

Select this component when a standard 3.9 V reference is required in a through-hole configuration. Consider the 5% tolerance and 500 mW power rating for general-purpose regulation tasks. Evaluate the negative temperature coefficient inherent to low-voltage Zener diodes if thermal stability is critical. Compare against surface-mount equivalents like the 1N5228BUR-1 series if board space constraints necessitate a change in package type.

Single Zener Diodes Part Context

The 1N5228 belongs to the widely recognized 1N52xx series of Zener diodes, which are standardized by JEDEC. This series covers a broad range of voltage values from approximately 2.4 V to 200 V. The 1N5228 specifically addresses the lower voltage end of the spectrum, where Zener breakdown mechanisms dominate over avalanche breakdown, resulting in distinct thermal characteristics compared to higher voltage variants in the same family.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers include 1N5228B and MSP1N5228CUR-1TR. Verify pinout compatibility and package integrity when substituting surface-mount versions for through-hole designs.