1N4935G R0G

Overview

The Taiwan Semiconductor 1N4935G R0G is a fast recovery rectifier diode housed in the DO-204AL (DO-41) package. It features a single silicon die configuration with a maximum average forward rectified current of 1 A and a repetitive peak reverse voltage rating of 200 V. The device supports a non-repetitive peak forward surge current of 30 A under an 8.3 ms half-sine wave condition. Electrical characteristics include a maximum forward voltage of 1.2 V at 1 A, a typical junction-to-ambient thermal resistance of 65 °C/W, and a maximum reverse recovery time of 200 ns. Operating temperatures range from -55°C to +150°C.

Feature Summary

• High efficiency operation characterized by low forward voltage drop
• Robust construction supporting high current and surge current capabilities
• Glass passivated junction for enhanced reliability and low leakage current
• Compliant with RoHS directives and halogen-free standards

Applications

• DC to DC converter circuits
• Switching mode power supplies and inverters
• General purpose rectification tasks

Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm packaging type and quantity. Confirm that the ordering code matches the required voltage rating within the series. Ensure compliance with environmental standards such as RoHS and halogen-free requirements if specified for the project. Check for AEC-Q101 qualification needs by verifying the presence of the 'H' suffix in the part number.

Selection Notes

Select this component for applications requiring fast switching speeds and high reliability in standard through-hole configurations. Consider the 200 V reverse voltage rating to ensure adequate margin for the circuit's peak inverse voltage. Evaluate the thermal resistance and operating temperature range to verify suitability for the intended heat dissipation environment. Compare forward voltage specifications against alternative devices to optimize overall system efficiency.

Part Context

This component belongs to the 1N493xG series of fast recovery rectifiers manufactured by Taiwan Semiconductor. The series covers voltage ratings from 50 V to 600 V, sharing common mechanical and electrical characteristics while differing in breakdown voltage. The 1N4935G variant specifically addresses the 200 V requirement within this lineup, utilizing the standard DO-41 axial leaded package for versatile mounting options.

Replacement Considerations

Compatible substitutes include other 1N4935 variants from different manufacturers, such as Vishay or MCC, provided they meet the same 1 A current and 200 V reverse voltage ratings in a DO-41 package. Verify pinout compatibility and thermal performance before substitution.