RS31385R

Hot Swap Controllers Overview

The RS31385R is a high-current electronic fuse and hot-swap controller manufactured by Reed Semiconductor Corp. It integrates a power MOSFET to provide thermal, overcurrent, and short-circuit protection for PCI, PCIe, and server applications. The device supports an input voltage range of 4 V to 16 V and features a low on-resistance internal switch. It includes programmable current limiting via an external resistor and offers precise current monitoring with ±1% accuracy at +25°C. The component provides fast short-circuit protection with a typical trip time of 200 ns and supports parallel operation for higher current requirements.

Hot Swap Controllers Feature Summary

• Integrates a low on-resistance transmission MOSFET for efficient power handling
• Provides accurate current monitoring with specified tolerance at standard temperature
• Features adjustable output soft-start timing to control inrush current
• Supports parallel operation for scaling current capacity in high-power designs

Hot Swap Controllers Applications

• PCI and PCIe card protection
• Server backplane hot-swap interfaces
• Storage drive bay power management
• Network equipment power distribution

Hot Swap Controllers Procurement Notes

Verify the specific suffix 'R' against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure the design accounts for the required external programming resistor for current limit settings. Confirm that the operating temperature range meets the system's environmental requirements before finalizing procurement.

Hot Swap Controllers Selection Notes

Select this component when designing systems requiring robust hot-swap capabilities for PCI or PCIe standards. It is suitable for applications needing precise current monitoring and adjustable soft-start times. Consider parallel configurations if the application demands current handling beyond the single-device rating. Ensure the PCB layout supports the thermal dissipation needs of the integrated MOSFET.

Hot Swap Controllers Part Context

This part belongs to Reed Semiconductor's family of active circuit protection devices designed for high-current DC-DC and hot-swap applications. These components replace traditional fuses and discrete MOSFET solutions by integrating control logic and power switches into a compact package. The series is engineered for reliability in demanding computing and networking environments.

Hot Swap Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.