WT41U-E-HCI21001

RF Transceiver Modules And Modems Overview

The WT41U-E-HCI21001 is a Class 1 Bluetooth 2.1+EDR module by Silicon Labs, designed for long-range wireless communication. It features a USB transport interface and an external U.FL antenna connector. The module operates at 3.6 V with a maximum output power of 17 dBm and a receiver sensitivity of -94 dBm. Data rates reach up to 3 Mb/s. Physical dimensions are 35.3 mm x 14 mm x 3.85 mm in an SMD package. Operating temperature ranges from -40°C to +85°C.

RF Transceiver Modules And Modems Feature Summary

• Supports Bluetooth 2.1+EDR protocol for enhanced data rate transmission
• Integrates USB transport interface for simplified host connectivity
• Includes external U.FL antenna connector for flexible RF design

RF Transceiver Modules And Modems Applications

• Industrial wireless sensor networks requiring extended range
• Medical device connectivity solutions
• Consumer electronics with USB-based host interfaces

RF Transceiver Modules And Modems Procurement Notes

This component is officially obsolete and no longer manufactured by Silicon Labs. Procurement should focus on verifying the authenticity of remaining stock through authorized channels. Engineers must initiate replacement strategies immediately due to discontinuation. Availability is limited to existing inventory or third-party surplus markets without manufacturer support.

RF Transceiver Modules And Modems Selection Notes

Select this module only if legacy Bluetooth 2.1+EDR compatibility is strictly required alongside USB transport. Verify that the external U.FL antenna interface aligns with the system's mechanical constraints. Consider the end-of-life status when planning long-term production cycles. Evaluate thermal performance within the specified -40°C to +85°C operating range for the target application environment.

RF Transceiver Modules And Modems Part Context

The WT41U-E-HCI21001 belongs to the Silicon Labs WT41u series, which provides highly integrated Bluetooth modules. This specific variant emphasizes USB connectivity and Class 1 range capabilities. It serves as a specialized solution for applications needing robust wireless links with standard USB host integration, distinct from UART-only variants in the same family.

RF Transceiver Modules And Modems Replacement Considerations

Silicon Labs recommends the BT122-A-V2 as a manufacturer-approved substitute. This alternative addresses the discontinuation of the WT41U series while maintaining similar functional requirements for Bluetooth connectivity.