| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            12 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            32-WFQFN Exposed Pad | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Published | 
                                            2007 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Part Status | 
                                            Active | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            2  (1 Year) | 
                                        
                                                                            
                                            | Type | 
                                            TxRx Only | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            2.7V~3.6V | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Frequency | 
                                            400MHz~510MHz | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Base Part Number | 
                                            SX125 | 
                                        
                                                                            
                                            | Interface | 
                                            SPI | 
                                        
                                                                            
                                            | Power - Output | 
                                            7dbm | 
                                        
                                                                            
                                            | RF Family/Standard | 
                                            802.15.4 | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            I2S, SPI | 
                                        
                                                                            
                                            | Current - Receiving | 
                                            18mA | 
                                        
                                                                            
                                            | Current - Transmitting | 
                                            60mA | 
                                        
                                                                            
                                            | Modulation | 
                                            FHSS, FSK, OFDM, O-QPSK | 
                                        
                                                                            
                                            | GPIO | 
                                            4 | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                                                    
                            
                         
                                                SX1255IWLTRT Overview
Space is saved using RF transceiver IC's 32-WFQFN Exposed Pad package. Surface Mount is used for RF transceiver's mounting.In this case, the result is a TxRx Only with transceiver RF's  high efficiency.In order to provide high reliability, advanced transceiver RF' packaging Tape & Reel (TR) is used.Search with SX125 if you are looking for transceiver variants.Frequency 400MHz~510MHz is the basis of operation.
SX1255IWLTRT Features
32-WFQFN Exposed Pad package
Surface Mount for mounting
TxRx Only 
 Tape & Reel (TR) is used
Use SX125
SX1255IWLTRT Applications
There are a lot of Semtech Corporation SX1255IWLTRT RF Transceiver ICs applications. 
- Switch
 - Health and Fitness
 - Low-power IoT applications
 - Internet Radio
 - Power management
 - Thermostats
 -  
 - Receive
 - Medical
 - Patient Asset Tracking