1N3477

Single Zener Diodes Overview

The 1N3477 is a single silicon Zener diode manufactured by Microsemi Corporation. It features a nominal Zener voltage of 2.2V with a tolerance of 5%. The device is rated for a power dissipation of 0.25W (250mW). It utilizes an axial leaded DO-7 package, which corresponds to the DO-204AA case style. The component is unidirectional and constructed using silicon technology.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a low 2.2V reference level
• Utilizes a glass passivated junction for reliability
• Designed for general-purpose voltage clamping and regulation applications

Single Zener Diodes Applications

• Voltage reference circuits requiring low voltage stability
• Overvoltage protection in low-voltage signal lines
• Clamping applications in consumer electronics

Single Zener Diodes Procurement Notes

Verify RoHS compliance status as sources indicate non-compliance due to lead content. Confirm manufacturer origin between Microchip and Microsemi designations. Ensure DO-7 axial package compatibility with PCB layout requirements before procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring a precise 2.2V Zener reference. Consider the 0.25W power rating when designing thermal management. Verify that the axial DO-7 package fits the mechanical constraints of the target assembly compared to surface-mount alternatives.

Single Zener Diodes Part Context

This part belongs to the standard Zener diode family used for voltage regulation. It serves as a fundamental discrete semiconductor component for establishing fixed voltage points in analog and digital circuits. The DO-7 package offers through-hole mounting convenience for prototyping and legacy designs.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N3477A from Microchip Technology, which shares identical electrical specifications. Other manufacturers producing the 1N3477 designation may offer compatible replacements provided the 2.2V Zener voltage and 0.25W power rating are maintained.