1N4893A

Overview

The Microsemi Corporation 1N4893A is a single Zener diode designed for through-hole mounting in the DO-7 (DO-204AA) axial package. It features a nominal Zener voltage of 6.35 V with a tolerance of ±5%. The device supports a maximum power dissipation of 400 mW and exhibits a maximum Zener impedance of 10 Ohms. Operating temperatures range from -65°C to +175°C, ensuring reliability across wide thermal conditions.

Feature Summary

• Provides stable voltage regulation at a nominal 6.35 V level
• Capable of handling up to 400 mW of power dissipation
• Constructed for robust performance within extended temperature ranges

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications for signal lines

Procurement Notes

Verify the manufacturer designation as Microsemi Corporation or its successor entities during sourcing. Confirm the specific suffix indicates the standard tolerance variant. Ensure the component matches the DO-7 axial leaded package format required by the target PCB layout. Cross-reference datasheets for any updates regarding RoHS compliance status.

Selection Notes

Select this component when a 6.35 V Zener reference is needed with moderate power handling capabilities. The ±5% tolerance suits general-purpose regulation tasks. Consider the 400 mW rating against expected thermal loads. The axial package facilitates easy integration into legacy or high-reliability through-hole designs without requiring surface mount reflow processes.

Part Context

This part belongs to the standard Zener diode family utilized for voltage stabilization. It serves as a fundamental passive semiconductor element in analog circuit design. The numbering convention aligns with established JEDEC standards for small-signal Zener devices, ensuring broad compatibility across various electronic schematics.

Replacement Considerations

Compatible substitutes include other 6.35 V Zener diodes in the DO-7 package with matching 400 mW ratings and ±5% tolerance. Verify pinout compatibility and thermal characteristics before substitution.