SB840

Single Diodes Overview

The SB840 is an 8.0 A Schottky Barrier Rectifier Diode manufactured by Diotec Semiconductor, designed for high-efficiency power conversion applications. It features a maximum repetitive peak reverse voltage of 40 V and a forward current rating of 8.0 A at 25°C. The device exhibits a low forward voltage drop of less than 0.55 V at 8 A and a typical junction capacitance of 400 pF. It supports a peak forward surge current of up to 180 A and operates within a junction temperature range of -50°C to +150°C.

Single Diodes Feature Summary

• Utilizes Schottky barrier technology to achieve low forward voltage drop and minimal power loss during conduction.
• Features fast switching characteristics with low reverse recovery time, suitable for high-frequency rectification.
• Constructed with plastic encapsulation that provides robust mechanical stability and resistance to moisture.
• Offers high thermal performance with defined thermal resistance values for efficient heat dissipation.

Single Diodes Applications

• High-frequency rectification in DC-DC converters
• Power supply freewheeling diodes
• Reverse polarity protection circuits

Single Diodes Procurement Notes

Verify the specific voltage variant required, as the SB8xx series includes multiple ratings such as SB820 through SB8100. Confirm package compatibility and lead configuration against the target PCB footprint. Ensure the selected component meets the necessary thermal management requirements for the intended operating environment.

Single Diodes Selection Notes

Select the SB840 when an 8.0 A continuous current and 40 V reverse voltage rating are required. Consider its low forward voltage and fast switching speed for efficiency-critical designs. Evaluate thermal constraints, as derating is necessary at elevated ambient temperatures above 25°C.

Single Diodes Part Context

The SB840 belongs to the SB820...SB8100 series of Schottky Barrier Rectifiers from Diotec Semiconductor. This family offers various voltage ratings while maintaining a consistent 8.0 A forward current capability. These components are standard commercial/industrial grade devices intended for general-purpose power electronics applications.

Single Diodes Replacement Considerations

Cross-reference with other 8 A Schottky rectifiers offering similar 40 V ratings. Verify pinout compatibility and thermal resistance specifications before substitution. Ensure the alternative device meets the same junction temperature and surge current requirements.