1N459

Single Diodes Overview

The onsemi 1N459 is a small signal switching diode housed in the DO-35 glass axial leaded package. It features a maximum repetitive reverse voltage of 200 V and an average rectified forward current rating of 500 mA. The device supports a non-repetitive peak forward surge current of up to 4 A for microsecond pulses. Electrical characteristics include a forward voltage of 1.0 V at 100 mA and a reverse leakage current of 25 nA at 175 V. The component operates within a junction temperature range up to 175 °C and can be stored between -65 °C and +200 °C.

Single Diodes Feature Summary

• High conductance design with low leakage current specifications
• Glass axial-leaded DO-35 package construction
• Capable of handling high peak surge currents

Single Diodes Applications

• General purpose rectification
• Small signal switching circuits
• Clamping and protection applications

Single Diodes Procurement Notes

Verify the specific manufacturer origin, as the part was originally produced by Fairchild Semiconductor and may now be distributed under different branding or legacy status. Confirm RoHS compliance details and check for any product change notices regarding manufacturing location or material composition updates before finalizing procurement plans.

Single Diodes Selection Notes

Select this component when a through-hole small signal diode with 200 V blocking capability is required. Ensure the application does not exceed the 500 mA average forward current limit. Consider the thermal resistance of 300 °C/W for heat dissipation calculations in enclosed environments.

Single Diodes Part Context

This component belongs to the 1N459/A series of small signal diodes. It shares electrical similarities with other standard silicon rectifiers but is distinguished by its specific leakage and capacitance ratings suitable for general-purpose switching tasks.

Single Diodes Replacement Considerations

Check for equivalents such as the 1N459ATR variant which offers reel packaging options. Verify pinout compatibility and ensure substitute parts meet the same 200 V reverse voltage and 500 mA forward current requirements.