1N4908

Single Zener Diodes Overview

The Microchip Technology 1N4908 is a temperature compensated Zener reference diode designed for precision voltage regulation applications. It features a nominal Zener voltage of 12.8 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 400 mW and operates within a standard temperature range. Packaged in the DO-7 axial leaded through-hole format, it provides stable reference performance suitable for circuits requiring low noise and high accuracy.

Single Zener Diodes Feature Summary

• Temperature compensated design ensures stable voltage reference across operating ranges
• Low noise characteristics for precision analog circuit applications
• Through-hole DO-7 package for reliable board mounting

Single Zener Diodes Applications

• Precision voltage reference sources
• Temperature compensated regulator circuits
• Low noise analog signal conditioning

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as multiple entities including Microchip, Microsemi, and Digitron produce this part number. Confirm RoHS compliance status if required, noting that non-RoHS versions may exist. Ensure the DO-7 package and 12.8 V specification match the design requirements before procurement.

Single Zener Diodes Selection Notes

Select this component when a stable 12.8 V reference is needed with minimal temperature drift. The 400 mW power rating supports moderate current loads. Consider the DO-7 package constraints for PCB layout. Verify that the ±5% tolerance meets the system's accuracy requirements compared to tighter tolerance alternatives.

Single Zener Diodes Part Context

This component belongs to the family of temperature compensated Zener diodes, often referred to as BZX series equivalents or low-noise references. These devices utilize specific doping profiles to minimize the temperature coefficient near the knee voltage, providing superior stability compared to standard Zener diodes in the same voltage range.

Single Zener Diodes Replacement Considerations

Public confirmed substitutes include the 1N4896. Verify pinout compatibility and electrical specifications such as voltage tolerance and power dissipation before substitution.