1N4894

Overview

The Microsemi Corporation 1N4894 is a single Zener diode designed as an ultra-stable temperature-compensated reference. It features a nominal Zener voltage of 6.35 V with a tolerance of ±5%. The device has a maximum power dissipation of 400 mW and a maximum impedance (Zzt) of 10 Ohms. It is available in a Through Hole DO-7 package.

Feature Summary

• Ultra-stable temperature compensation for precision reference applications
• Single Zener diode configuration
• Through-hole DO-7 packaging

Applications

• Voltage reference circuits
• Temperature compensated regulation
• Precision measurement instrumentation

Procurement Notes

Verify the manufacturer designation, specifically checking for Microsemi or Actel branding, as this component was part of their portfolio before acquisition by Microchip. Confirm the package type is DO-7 and the voltage rating matches 6.35 V. Ensure the part status is active if new production is required, and check for RoHS compliance status as indicated in distributor listings.

Selection Notes

Select this component when a stable 6.35 V reference is needed with low temperature drift characteristics. The 400 mW power rating suits low-current applications. Consider the DO-7 through-hole package for standard PCB layouts requiring axial leads. Verify that the ±5% tolerance meets the circuit's accuracy requirements.

Part Context

This component belongs to the series of Zener diodes manufactured by Microsemi Corporation, formerly known as Actel. These devices are categorized under Diodes & Rectifiers. The 1N4894 specifically serves as a voltage reference element, leveraging temperature compensation technology to maintain stability across varying thermal conditions.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Users should consult official Microchip or Microsemi documentation for cross-reference data.