1N459A

Single Diodes Overview

The onsemi 1N459A is a small signal switching diode housed in the DO-35 through-hole package. It features a peak reverse voltage of 200 V and a maximum forward current of 500 mA. The device supports a surge current of 4 A with a forward voltage of 1 V at rated current. Reverse leakage current is specified at 25 nA. Operating temperatures range from -65 C to +175 C, ensuring reliability across wide thermal conditions.

Single Diodes Feature Summary

• High conductance characteristics for efficient signal handling
• Low leakage performance suitable for precision applications
• Wide operating temperature range for harsh environments

Single Diodes Applications

• General purpose rectification circuits
• Signal switching applications
• Protection against voltage spikes

Single Diodes Procurement Notes

Verify the specific suffix code to confirm packaging type, as standard variants may differ between bulk and reel formats. Confirm RoHS compliance status directly with the manufacturer documentation before integration. Ensure the DO-35 lead form matches your PCB footprint requirements. Cross-reference the datasheet revision date to validate electrical parameter limits against your design specifications.

Single Diodes Selection Notes

Select this component when a through-hole solution is required for high-voltage switching tasks. The 200 V rating provides sufficient margin for moderate voltage lines. Consider the 500 mA continuous current limit for load capacity. The extended temperature range makes it suitable for industrial equipment where ambient heat is a factor compared to standard commercial grade parts.

Single Diodes Part Context

This part belongs to the 1N459 series of general-purpose silicon planar junction diodes manufactured by onsemi. It is designed for use in low-power switching and rectification roles within electronic assemblies. The DO-35 glass passivated case provides mechanical stability and environmental protection for the internal semiconductor structure.

Single Diodes Replacement Considerations

The 1N459 is functionally equivalent to other standard 200V axial diodes such as the 1N4002, though current ratings may vary. Verify pinout compatibility and thermal dissipation capabilities when substituting. Check for any changes in reverse recovery time if used in high-frequency switching applications.