| Parameters | 
                                
                                                                                                            
                                            | Height Seated (Max) | 
                                            2.45mm | 
                                        
                                                                            
                                            | Length | 
                                            35.3mm | 
                                        
                                                                            
                                            | Width | 
                                            14mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                            
                                            | Factory Lead Time | 
                                            12 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            Module | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Part Status | 
                                            Not For New Designs | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            3 (168 Hours) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            59 | 
                                        
                                                                            
                                            | Additional Feature | 
                                            PITCH TAKEN FROM RECOMMENDED LAND PATTERN | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            3.3V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            QUAD | 
                                        
                                                                            
                                            | Terminal Form | 
                                            NO LEAD | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            260 | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            1.5mm | 
                                        
                                                                            
                                            | Reach Compliance Code | 
                                            compliant | 
                                        
                                                                            
                                            | Frequency | 
                                            2.4GHz | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            40 | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            R-XQMA-N59 | 
                                        
                                                                            
                                            | Supply Voltage-Max (Vsup) | 
                                            3.6V | 
                                        
                                                                            
                                            | Supply Voltage-Min (Vsup) | 
                                            3V | 
                                        
                                                                            
                                            | Protocol | 
                                            Bluetooth v2.1 + EDR | 
                                        
                                                                            
                                            | Power - Output | 
                                            17dBm | 
                                        
                                                                            
                                            | RF Family/Standard | 
                                            Bluetooth | 
                                        
                                                                            
                                            | Antenna Type | 
                                            Integrated, Chip | 
                                        
                                                                            
                                            | Consumer IC Type | 
                                            CONSUMER CIRCUIT | 
                                        
                                                                            
                                            | Sensitivity | 
                                            -94dBm | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            UART, USB | 
                                        
                                                                            
                                            | Current - Receiving | 
                                            44mA | 
                                        
                                                                            
                                            | Current - Transmitting | 
                                            110mA | 
                                        
                                                                                                    
                            
                         
                                                WT41U-A-AI55 Overview
In order to mount the RF Transceiver, Surface Mount is used.For optimal performance, this RF Transceiver module makes use of the Tape & Reel (TR) package.Throughout this RF Transceiver module, there are 59 terminations.This Transceiver should operate at a temperature of -40°C~85°C when operating.3.3V voltage can be supplied by the RF Transceiver.There is 2.4GHz frequency set for the RF Transceiver Module.
WT41U-A-AI55 Features
Surface Mount
Tape & Reel (TR) package
59 terminations
3.3V volts
WT41U-A-AI55 Applications
There are a lot of Silicon Labs WT41U-A-AI55 RF Transceiver Modules applications. 
- Power Amplifier (PA)
 - LED Lighting
 - Thermostats
 - Wireless Price Tags
 - Smart Meters
 - Remote Device Management
 - Medical
 - Patient Asset Tracking
 - Internet of Things (IoT)
 - Retail