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RS31212BR is listed in the Hot Swap Controllers range at ChipApex. The manufacturer field lists Reed Semiconductor Corp.. Its product description is IC ELECTRONIC FUSE 8WSON. Review the specifications below when checking this part for your BOM.
Hot Swap Controllers specifications for RS31212BR
- Description：IC ELECTRONIC FUSE 8WSON
- Series：-
- Mfr：Reed Semiconductor Corp.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Hot Swap Controller
- Number of Channels：1
- Internal Switch(s)：Yes
- Applications：Motherboard
- Features：Auto Retry
- Programmable Features：Current Limit
- Voltage - Supply：4.5V ~ 5.5V
- Current - Output (Max)：4A
- Operating Temperature：-40°C ~ 125°C
- Current - Supply：4:00 AM
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-WSON (2x2)
- Grade：-
- Qualification：-
Hot Swap Controllers datasheet and documents for RS31212BR
Hot Swap Controllers Overview
The RS31212BR is a simple 5V eFuse protection switch manufactured by Reed Semiconductor Corp. It integrates a 34mΩ pass MOSFET to limit current and voltage during fault conditions. The device operates within an input voltage range of 4.5V to 5.5V and supports a continuous current of 4A. It features programmable current limiting and auto-retry capabilities. The component is housed in an 8-WSON package with an exposed pad, suitable for surface mount applications.
Hot Swap Controllers Feature Summary
- Integrated active circuit protection with built-in MOSFET
- Programmable current limiting functionality
- Auto-retry feature for transient fault recovery
Hot Swap Controllers Applications
- Motherboard protection circuits
Hot Swap Controllers Procurement Notes
Verify the manufacturer part number RS31212BR against official Reed Semiconductor Corp documentation to ensure authenticity. Confirm the package type is 8-WSON Exposed Pad and the marking is 212B. Check that the operating temperature range matches -40°C to 125°C requirements for your specific design environment before finalizing procurement.
Hot Swap Controllers Selection Notes
Select this component when designing 5V power distribution networks requiring integrated overcurrent protection. The 34mΩ on-resistance minimizes power loss compared to discrete solutions. Ensure the load current does not exceed the 4A rating. The auto-retry function is beneficial for systems where temporary faults may occur without requiring manual intervention.
Hot Swap Controllers Part Context
This part belongs to the RS3121x series of eFuse protection switches from Reed Semiconductor Corp. Other variants in the family include RS31211 (3.3V), RS31309 (wide input range), and RS31311 (12V). These devices share similar architectural features but are differentiated by their nominal operating voltages and specific application targets.
Hot Swap Controllers Replacement Considerations
Direct substitutes depend on voltage and current ratings. Consider RS31211 for 3.3V systems or RS31311 for 12V systems if pin compatibility is required. Verify that any replacement maintains the 4A current handling and 8-WSON package dimensions.
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