1N5820-B

Overview

The Diodes Incorporated 1N5820-B is a Schottky barrier rectifier featuring a guard ring die construction for transient protection. It operates with a peak repetitive reverse voltage of 20 V and an average rectified output current of 3.0 A at a lead temperature of 95 °C. The device exhibits a maximum forward voltage drop of 0.475 V at 3.0 A and 0.500 V at 9.4 A, alongside a peak reverse current of 2.0 mA at 25 °C. It supports a non-repetitive peak forward surge current of 80 A and functions within a junction temperature range of -65 to +125 °C.

Feature Summary

• Employs Schottky barrier chip technology with guard ring die construction for enhanced transient protection.
• Delivers high efficiency through low power loss and minimal forward voltage drop.
• Features high surge capability suitable for demanding electrical environments.
• Constructed with UL flammability classification rating 94V-0 plastic material.

Applications

• Low voltage, high frequency inverters
• Free wheeling diode circuits
• Polarity protection applications

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm exact electrical tolerances and packaging configurations. Ensure compatibility with required thermal management strategies, as performance depends on lead temperature and mounting position. Cross-reference datasheet notes regarding current derating for capacitive loads to validate circuit design integrity before procurement.

Selection Notes

Select this component for applications requiring efficient rectification in low-voltage, high-frequency environments. Consider the 3.0 A continuous current rating and 20 V reverse voltage limits when designing power stages. Evaluate thermal resistance characteristics and derating curves to ensure reliable operation under varying load conditions and ambient temperatures.

Part Context

This component belongs to the 1N5820-1N5822 series of 3.0A Schottky barrier rectifiers manufactured by Diodes Incorporated. The series utilizes DO-201AD axial leaded packages designed for robust performance in general-purpose rectification tasks. These devices are engineered to provide reliable operation in industrial and consumer electronics applications requiring high surge capability.

Replacement Considerations

Direct substitutes include the 1N5820G from onsemi and the 1N5820-TP from Micro Commercial Components (MCC). Verify that alternative components match the 20 V reverse voltage and 3.0 A current specifications to maintain circuit functionality.

FAQ

What is the typical total capacitance of the 1N5820-B?

The typical total capacitance is measured at 25 °C junction temperature, 1 MHz frequency, and 50 mV p-p signal level.

How does the forward current change with lead temperature?

The forward current must be derated based on the lead temperature, as illustrated in the forward current derating curve provided in the datasheet.