SI4421-A0-FT

Product Overview

SI4421-A0-FT is a sub-GHz ISM RF transceiver IC from Silicon Labs. It handles the RF transmit and receive functions needed for sub-GHz ISM wireless links. In a design or maintenance project, it is a candidate for sub-GHz ISM telemetry, remote control, metering, security and industrial wireless products.

Before design approval or replacement purchasing, check the 16-TSSOP (0.173", 4.40mm Width) package or case style, surface-mount package for compact RF PCB layouts. The antenna network, protocol stack, firmware version, power profile, regulatory requirements and lifecycle status should be matched to the original design or target application.

Key Features

• Manufacturer: Silicon Labs
• Part Number: SI4421-A0-FT
• Product Category: RF Transceiver
• Device Type: sub-GHz ISM RF transceiver IC
• Product Description: sub-GHz ISM RF transceiver IC with sub-GHz ISM, 16-TSSOP (0.173", 4.40mm Width), intended for embedded wireless links and RF connectivity designs
• Wireless Protocol / Band Reference: sub-GHz ISM
• Package / Case: 16-TSSOP (0.173", 4.40mm Width)
• Mounting / Construction: surface-mount package for compact RF PCB layouts
• Application Focus: sub-GHz ISM telemetry, remote control, metering, security and industrial wireless products
• Functional Role: RF transmit/receive communication, wireless data exchange and embedded connectivity

Applications

SI4421-A0-FT can be used in sub-GHz ISM wireless products, remote controls, metering systems, alarm equipment, industrial telemetry, long-range sensors and low-power RF nodes.

The final design should verify regional frequency band, output power, modulation format, antenna matching, receiver sensitivity and protocol requirements.

Quality & Sourcing

Antrex Electronics can support SI4421-A0-FT sourcing with stock availability checks, RFQ quotation, package confirmation, date code review and shipment arrangement. For faster quotation, buyers can provide target quantity, acceptable date code, packaging preference, target price, required wireless protocol, frequency band, module or firmware version, and end-application information.

For quality control, Antrex Electronics can help arrange product photos, label review, visual inspection and third-party testing support when required. OEMs, EMS providers, wireless module manufacturers, IoT device makers, repair centers and electronic component buyers are welcome to send BOM lists or hard-to-find RF transceiver requirements for sourcing assistance.