1N4933G

Overview

The Good-Ark Semiconductor 1N4933G is a fast recovery plastic rectifier diode featuring a cavity-free glass passivated junction. It provides a maximum repetitive reverse voltage of 50V and an average forward current of 1.0A at 75°C ambient temperature. The device operates with a typical reverse leakage current below 0.1mA and exhibits a maximum non-repetitive peak forward surge current of 30A for half-wave sinusoidal cycles. Electrical characteristics include a maximum instantaneous reverse breakdown voltage of 53V, a maximum DC blocking voltage of 50V, and a maximum reverse recovery time of 200ns. Thermal resistance from junction to ambient is rated at 55°C/W.

Feature Summary

• Fast switching capability designed for high efficiency in high frequency rectifier circuits
• Cavity-free glass passivated junction construction ensuring high reliability
• High temperature metallurgically bonded construction capable of meeting MIL-S-19500 environmental standards

Applications

• High frequency rectifier circuits
• General purpose rectification requiring fast recovery characteristics

Procurement Notes

Verify the specific manufacturer datasheet for the 1N4933G to confirm compliance with RoHS directives and MIL-S-19500 environmental standards. Ensure that lead length requirements are met during soldering, as thermal resistance values are calculated based on a 0.375-inch (9.5mm) lead length. Confirm package dimensions against JEDEC DO-204AL specifications before integration into PCB layouts.

Selection Notes

Select this component when circuit designs require fast recovery times and low reverse leakage currents within a 50V reverse voltage rating. The 1.0A continuous current capability makes it suitable for applications where thermal management allows operation up to 75°C ambient temperature without thermal runaway. Consider the DO-41 axial leaded package for through-hole mounting configurations.

Part Context

This component belongs to the 1N493xG series of fast recovery rectifiers manufactured by Good-Ark Semiconductor. The series covers voltage ratings from 50V to 600V, sharing common physical packaging and general electrical performance traits such as glass passivation and fast switching speeds. The 1N4933G specifically addresses the lower end of the voltage range within this family.

Replacement Considerations

Cross-reference with other manufacturers' 1N4933 equivalents to verify pinout compatibility and thermal resistance values. Ensure substitute components maintain the same DO-41 package form factor and meet the required 200ns reverse recovery time specification.