1N4305TR

Overview

The onsemi 1N4305TR is a general-purpose switching diode housed in the DO-35 axial leaded package. It features a peak repetitive reverse voltage of 75 V and a continuous forward current rating of 300 mA. The device exhibits a maximum forward voltage drop of 850 mV at 10 mA and a typical reverse leakage current of 100 nA. Key dynamic parameters include a maximum reverse recovery time of 4 ns and a junction capacitance of 2 pF. It operates within a temperature range of -65°C to +175°C and is supplied in tape and reel packaging.

Feature Summary

• Fast switching capability with minimal reverse recovery time for high-frequency signal processing
• High thermal stability supporting operation up to 175°C junction temperature
• Low junction capacitance suitable for high-speed digital and computer applications

Applications

• Signal rectification in computer logic circuits
• Clamping and protection in high-speed data lines
• General purpose switching in consumer electronics

Procurement Notes

Verify the specific manufacturer source, as the 1N4305 designation is historically associated with Fairchild Semiconductor and is now produced by onsemi following their acquisition. Confirm that the ordering suffix TR indicates tape and reel packaging consistent with automated assembly requirements. Ensure compliance with RoHS directives if required by the end application standards.

Selection Notes

Select this component when a robust axial leaded diode is required for through-hole mounting in space-constrained designs. The 75 V reverse voltage provides adequate margin for low-voltage logic systems. Consider the 300 mA forward current limit against peak load demands. The DO-35 package offers reliable mechanical stability compared to surface mount alternatives in vibration-prone environments.

Part Context

This part belongs to the standard 1N4300 series of silicon planar switching diodes. Originally introduced by Fairchild Semiconductor, production rights were transferred to onsemi. The 1N4305 variant specifically defines the 75 V reverse voltage rating within this family, distinguishing it from lower or higher voltage siblings like the 1N4301 or 1N4306.

Replacement Considerations

• 1N4305 (Generic/Other Manufacturers)
• 1N4305-1E3/TR (Microchip Technology)

FAQ

What is the maximum operating junction temperature?

The maximum operating junction temperature is 175°C.

Does the 1N4305TR support surface mount technology?

No, the 1N4305TR utilizes a DO-35 axial leaded package designed for through-hole mounting.