WT32-A-AI5

RF Transceiver Modules And Modems Overview

The Silicon Labs WT32-A-AI5 is a discontinued Bluetooth RF transceiver module based on the BlueCore5 IC. It supports Bluetooth v2.1 + EDR Class 2 protocols at a frequency of 2.4GHz. The module features integrated chip antennas and surface-mount installation. Key electrical parameters include a transmitter output power of 7dBm, receiver sensitivity of -86dBm, and data rates up to 3Mbps. It operates on a supply voltage range of 1.8V to 3.6V, with typical current consumption of 4.5mA for both transmission and reception. Interfaces include I2S, PIO, SPI, UART, and USB.

RF Transceiver Modules And Modems Feature Summary

• Supports Bluetooth v2.1 + EDR Class 2 connectivity standards
• Integrates BlueCore5 baseband processor for audio and data processing
• Provides multiple serial communication interfaces including UART, SPI, and USB
• Features compact surface-mount design with integrated chip antenna

RF Transceiver Modules And Modems Applications

• Wireless audio streaming devices
• Bluetooth-enabled peripheral connections
• Embedded wireless communication systems
• Mobile device accessory pairing

RF Transceiver Modules And Modems Procurement Notes

This component is officially marked as obsolete and no longer manufactured by Silicon Labs. Procurement must rely on remaining distributor stock or verified secondary market sources. Buyers should verify part authenticity and storage history due to the end-of-life status. Cross-reference with the direct replacement model WT32I-A-AI61 is strongly recommended for new designs to ensure long-term supply chain stability and compatibility.

RF Transceiver Modules And Modems Selection Notes

Select this module only for legacy system maintenance or repair where specific form-factor and interface compatibility are required. For new product development, the WT32I-A-AI61 is the designated direct replacement offering updated manufacturing support. Ensure that the target application does not require Bluetooth Low Energy (BLE) capabilities, as this module is strictly designed for Classic Bluetooth v2.1 + EDR protocols and lacks BLE functionality.

RF Transceiver Modules And Modems Part Context

The WT32-A-AI5 belongs to the Silicon Labs WT32 series of Bluetooth modules, which utilize the Broadcom/CSR BlueCore5 chipset. This series was widely used in early Bluetooth audio and data applications before the industry transitioned to Bluetooth 4.0 and later standards. The module integrates the radio, baseband, and protocol stack into a single SMD package, simplifying integration for manufacturers requiring reliable short-range wireless connectivity without external RF components.

RF Transceiver Modules And Modems Replacement Considerations

The direct replacement part number is WT32I-A-AI61. This substitute maintains similar functional characteristics but reflects updated manufacturing processes. Verify pinout and software compatibility when migrating from the obsolete WT32-A-AI5 to the WT32I-A-AI61 to ensure seamless integration in existing hardware designs.