1N5228B

Single Zener Diodes Overview

The SMC Diode Solutions 1N5228B is a silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.9 V with a tolerance of ±5%. The device has a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 1 µA at the rated voltage, a Zener impedance of 23 Ohms, and a test current of 20 mA. The component utilizes a DO-35 glass axial leaded package.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Encapsulated in hermetically sealed glass axial DO-35 package
• Supports high operating temperatures up to 175°C

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation as SMC Diode Solutions may distribute or rebrand components originally manufactured by other entities such as Microsemi or Vishay. Confirm RoHS compliance status and exact datasheet revision before procurement, as specifications like leakage current and packaging can vary between original manufacturers and distributors.

Single Zener Diodes Selection Notes

Select this component for low-power regulation tasks requiring a 3.9 V reference. Ensure the circuit design accommodates the 500 mW power limit and the 23 Ohm impedance. Verify that the DO-35 through-hole package fits the PCB layout constraints and that the thermal environment supports the specified operating temperature range.

Single Zener Diodes Part Context

This part belongs to the standard 1N522x series of 500 mW Zener diodes. These components are widely used in general-purpose electronics for providing stable reference voltages. The 1N5228B specifically targets the 3.9 V segment of this series, offering a balance of low voltage drop and moderate power handling in a compact axial package.

Single Zener Diodes Replacement Considerations

Direct functional equivalents include the Vishay 1N5228B and the Microsemi/Microchip 1N5228B. When substituting, verify that the replacement maintains the same DO-35 package dimensions, 5% voltage tolerance, and 500 mW power rating to ensure mechanical and electrical compatibility.