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RS31211BR 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 RS31211BR
- 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：3V ~ 3.6V
- 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 RS31211BR
Hot Swap Controllers Overview
The RS31211BR is a simple 3.3V eFuse protection switch manufactured by Reed Semiconductor Corp. It integrates a pass MOSFET to limit current and voltage to safe levels during fault conditions. The device supports a maximum output current of 4A and operates within an ambient temperature range of -40°C to 125°C. It features a supply current of 4A and utilizes an 8-WFDFN Exposed Pad (WSON-8) surface mount package.
Hot Swap Controllers Feature Summary
- Integrates a low on-resistance pass MOSFET for efficient power switching
- Provides active circuit protection by limiting current and voltage during faults
- Designed as a simple electronic fuse solution for overcurrent protection
Hot Swap Controllers Applications
- General circuit protection in electronic systems
- Overcurrent protection for 3.3V power rails
- Hot swap controller applications requiring simple eFuse functionality
Hot Swap Controllers Procurement Notes
Verify the specific marking code, which is 211B, to confirm authenticity against the datasheet specifications. Ensure the package matches the 8-WFDFN Exposed Pad configuration. Confirm the manufacturer is Reed Semiconductor Corp. and check standard lead times, typically around 12 weeks, before placing orders.
Hot Swap Controllers Selection Notes
Select this component when a fixed 3.3V input/output configuration is required with a 4A current limit. It is suitable for applications needing integrated MOSFET protection without external control complexity. Compare with the RS31212 series if a 5V rating is needed instead.
Hot Swap Controllers Part Context
This part belongs to the RS3121x family of simple eFuse protection switches from Reed Semiconductor. The family includes variants for different voltage ratings such as 5V and 12V. These devices are designed to replace traditional discrete fuse solutions with active, resettable protection mechanisms.
Hot Swap Controllers Replacement Considerations
The RS31212BR is a similar device offering 5V operation with comparable 4A current handling capabilities. Consider the RS31210BR or RS31310BR if adjustable current limits between 2A and 5A are required instead of the fixed 4A limit.
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