90SQ045

Overview

The 90SQ045 is a Schottky rectifier diode manufactured by SMC Diode Solutions, designed for high-efficiency power conversion applications. It features a maximum repetitive peak reverse voltage of 45 V and an average forward rectified current rating of 9 A. The device utilizes a DO-201AD axial leaded package, suitable for through-hole mounting on printed circuit boards. Key electrical specifications include a maximum DC reverse leakage current of 3 mA at the rated voltage and a typical forward voltage drop of 0.57 V at full load current. The component operates within a junction temperature range of -55°C to +175°C, ensuring reliability under varying thermal conditions.

Feature Summary

• Schottky barrier technology enables super-high speed switching with low noise characteristics.
• Low forward voltage drop minimizes conduction losses and improves overall system efficiency.
• Lead-free construction ensures compliance with RoHS directives and environmental standards.

Applications

• Photovoltaic solar cell protection circuits
• Free-wheeling diodes in DC-DC converters
• Power supply rectification stages

Procurement Notes

Verify the specific ordering suffix to confirm terminal finish and packaging type, as variations may exist within the product line. Confirm that the required RoHS compliance status matches project specifications. Ensure the selected distributor provides traceability to the wafer lot for quality assurance purposes. Check for any specific handling requirements related to the axial leaded package during assembly.

Selection Notes

Select this component when a through-hole Schottky rectifier with a 45 V blocking capability and 9 A current rating is required. Consider the DO-201AD package size for board space constraints. Evaluate the thermal management needs given the 175°C junction temperature limit. Compare the forward voltage drop against alternative technologies to ensure optimal efficiency for the specific load profile.

Part Context

This part belongs to the 90SQ series of single Schottky rectifiers from SMC Diode Solutions. The series is characterized by its use of silicon carbide or advanced Schottky processes to achieve fast recovery times and low leakage currents. These devices are commonly integrated into industrial power supplies and renewable energy systems where reliability and low loss are critical performance factors.

Replacement Considerations

Direct substitutes must match the 45 V reverse voltage, 9 A current rating, and DO-201AD package. Verify pinout compatibility and thermal resistance values before substitution. Cross-reference datasheets for equivalent forward voltage and reverse leakage specifications to ensure circuit performance remains within design tolerances.