RS31331B

Hot Swap Controllers Overview

The RS31331B is a single-channel hot swap controller manufactured by Reed Semiconductor Corp. It operates within a supply voltage range of 2.97V to 16.5V and supports an output current of up to 7A. The device is housed in a compact 10-QFN (2x2) package, designed for surface mount applications. This component functions as an electronic fuse protection switch, providing active circuit protection by limiting current and voltage to safe levels during fault conditions.

Hot Swap Controllers Feature Summary

• Integrated active circuit protection with integrated MOSFET capabilities
• Supports auto-retry functionality for transient fault recovery
• Designed for high-density motherboard and industrial system integration

Hot Swap Controllers Applications

• Industrial system power distribution
• PCI/PCIe expansion slot protection
• Motherboard hot swap controller circuits

Hot Swap Controllers Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration, such as tape and reel quantities, matches your assembly requirements. Confirm that the 10-VFQFN package dimensions align with your PCB footprint design. Ensure compatibility with the target supply voltage range of 2.97V to 16.5V for your specific application circuit before finalizing procurement.

Hot Swap Controllers Selection Notes

Select this component when a single-channel solution is required for hot swap applications with moderate current demands up to 7A. The 10-QFN package offers a small form factor suitable for space-constrained designs. Consider the auto-retry feature if system availability requires automatic recovery from temporary overcurrent events without manual intervention.

Hot Swap Controllers Part Context

Reed Semiconductor specializes in power management solutions including eFuses, multiphase controllers, and smart power stages. The RS31331B belongs to their portfolio of small-size eFuse protection switches, which are engineered to provide robust protection for sensitive electronics in demanding environments like industrial automation and high-speed data interfaces.

Hot Swap Controllers Replacement Considerations

Cross-reference with other single-channel hot swap controllers offering similar 7A output current and 16.5V maximum input voltage. Verify pin-to-pin compatibility if replacing in existing designs, particularly checking the 10-QFN footprint and control logic interface specifications.