181NQ045-1

Overview

The 181NQ045-1 is a Schottky rectifier diode manufactured by SMC Diode Solutions, designed for high-current applications. It features a maximum DC reverse voltage of 45 V and an average rectified current of 180 A. The device utilizes the PRM1-1 Half Pak Module package, enabling chassis mounting for efficient thermal management. Key electrical parameters include a forward voltage of 660 mV at 180 A and a junction operating temperature range from -55°C to 175°C. The component exhibits a reverse leakage current of 15 mA at 30 V and a capacitance of 7700 pF at 5 V and 1 MHz.

Feature Summary

• Schottky technology provides super-high speed switching with low noise characteristics.
• Low voltage drop design enhances efficiency in power conversion circuits.
• PRM1-1 Half Pak Module package facilitates robust chassis mounting.
• Terminals feature 100% pure tin finish for reliable soldering.

Applications

• High-current DC-DC converters
• Power supply freewheeling applications
• Industrial motor drive systems

Procurement Notes

Verify the specific suffix '-1' corresponds to the PRM1-1 packaging and terminal configuration required for your assembly. Confirm RoHS3 compliance status if environmental regulations apply to your manufacturing process. Ensure chassis mounting capabilities align with your thermal design specifications before finalizing procurement orders.

Selection Notes

Select this component when high average current handling near 180 A is required alongside low forward voltage drop. The PRM1-1 package is suitable for applications necessitating direct chassis mounting for heat dissipation. Compare reverse leakage and capacitance values against circuit sensitivity requirements to ensure compatibility with high-frequency switching operations.

Part Context

This part belongs to the 181NQ series of Schottky rectifiers from SMC Diode Solutions. The series offers various voltage ratings within the same mechanical footprint, allowing for design flexibility. The 181NQ045-1 specifically addresses the 45 V rating tier, providing a standardized solution for medium-voltage, high-current power electronics designs requiring robust surface or chassis integration.

Replacement Considerations

Cross-reference with other 181NQ series variants such as 181NQ035-1 or 181NQ040-1 if different voltage ratings are needed while maintaining the same package. Verify that any substitute maintains the 180 A current rating and PRM1-1 form factor to ensure mechanical and thermal compatibility without redesigning the mounting structure.