STMicroelectronics

SPWF04SA

SPWF04SA Description

The SPWF04SA by STMicroelectronics is a compact WiFi RF transceiver module designed for embedded wireless connectivity. Operating in the 2.4GHz ISM band, it supports 802.11b/g/n protocols, delivering a data rate of up to 54Mbps and an output power of 18.3dBm. The module integrates a chip antenna, simplifying PCB design while ensuring robust RF performance. With a 3.3V supply voltage, it features low power consumption (105mA receiving, 260mA transmitting), making it suitable for battery-powered applications. Despite its obsolete status, it remains a reliable choice for legacy systems requiring stable WiFi connectivity.

SPWF04SA Features

• Protocol Support: Compliant with 802.11b/g/n standards, ensuring broad compatibility.
• High Efficiency: DSSS and OFDM modulation for reliable data transmission.
• Integrated Antenna: Chip antenna reduces external component count.
• Low Power: Optimized for 105mA (Rx) and 260mA (Tx) current draw.
• Versatile Interfaces: UART, SPI, and I2C for flexible host communication.
• Robust Packaging: Surface-mount module in a tray, rated for MSL 3 (168 hours).
• Regulatory Compliance: ROHS3 and REACH compliant, with ECCN 5A992C certification.

SPWF04SA Applications

• Industrial IoT: Enables wireless monitoring and control in harsh environments.
• Consumer Electronics: Ideal for smart home devices, wearables, and portable gadgets.
• Legacy Systems: Suitable for upgrades requiring 802.11b/g/n support.
• Embedded Designs: Simplifies WiFi integration in compact, low-power applications.

Conclusion of SPWF04SA

The SPWF04SA offers a balanced combination of performance, integration, and power efficiency, making it a practical solution for embedded WiFi applications. While obsolete, its reliable RF performance, modular design, and compliance ensure it remains viable for specific use cases. Engineers seeking a pre-certified, low-complexity WiFi module for legacy or niche projects may find this module advantageous.