1N5227B

Single Zener Diodes Overview

The SMC Diode Solutions 1N5227B is a silicon voltage regulator diode designed for through-hole mounting in the DO-35 axial glass package. It provides a nominal Zener voltage of 3.6V with a tolerance of ±5%. The device supports a maximum power dissipation of 500mW and operates within a temperature range of -65°C to +200°C. Key electrical characteristics include a maximum reverse leakage current of 15µA, a Zener impedance of 24Ω at a test current of 20mA, and a typical voltage temperature coefficient of -0.07%/K.

Single Zener Diodes Feature Summary

• Utilizes an epitaxial planar silicon structure housed in a hermetically sealed glass DO-35 package for high reliability.
• Features very sharp reverse breakdown characteristics to ensure precise voltage regulation.
• Maintains low reverse leakage current levels to minimize standby power consumption.

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation when sourcing this component, as the 1N5227B part number is widely produced by multiple semiconductor vendors including Central Semiconductor, onsemi, Vishay, and Microsemi. Confirm that the selected unit matches the required DO-35 package style and lead configuration. Ensure compliance with RoHS requirements if applicable, noting that some manufacturers offer both compliant and non-compliant variants under the same base part number.

Single Zener Diodes Selection Notes

Select this component for applications requiring a stable 3.6V reference in through-hole designs. Consider the negative temperature coefficient of approximately -0.07%/K when designing circuits sensitive to thermal drift. Verify that the 500mW power rating is sufficient for the expected operating conditions and derating requirements. Check for alternative packages like SOD-27 if space constraints necessitate surface-mount solutions.

Single Zener Diodes Part Context

The 1N5227B belongs to the standard 1N522x series of small-signal Zener diodes. These components are commonly used in general-purpose electronics for biasing and regulation. The DO-35 package is a legacy axial form factor still prevalent in industrial and military applications due to its robustness and ease of manual assembly.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N5227B from other manufacturers such as Central Semiconductor, onsemi, Vishay, and Microsemi (MQ1N5227B). Cross-reference datasheets to confirm identical pinout, voltage tolerance, and package dimensions before substitution.