| Parameters | 
                                
                                                                                                            
                                            | Height Seated (Max) | 
                                            1mm | 
                                        
                                                                            
                                            | Length | 
                                            4mm | 
                                        
                                                                            
                                            | Width | 
                                            4mm | 
                                        
                                                                            
                                            | REACH SVHC | 
                                            No SVHC | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                            
                                            | Factory Lead Time | 
                                            12 Weeks | 
                                        
                                                                            
                                            | Lifecycle Status | 
                                            LAST SHIPMENTS (Last Updated: 1 week ago) | 
                                        
                                                                            
                                            | Mount | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            20-VFQFN Exposed Pad | 
                                        
                                                                            
                                            | Number of Pins | 
                                            20 | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Published | 
                                            2004 | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e3 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Part Status | 
                                            Discontinued | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1 (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            20 | 
                                        
                                                                            
                                            | Type | 
                                            TxRx Only | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            Tin (Sn) | 
                                        
                                                                            
                                            | Technology | 
                                            CMOS | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            1.8V~3.6V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            QUAD | 
                                        
                                                                            
                                            | Terminal Form | 
                                            NO LEAD | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            3V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.5mm | 
                                        
                                                                            
                                            | Frequency | 
                                            27MHz~1.05GHz | 
                                        
                                                                            
                                            | Power - Output | 
                                            16dBm Max | 
                                        
                                                                            
                                            | RF Family/Standard | 
                                            General ISM < 1GHz | 
                                        
                                                                            
                                            | Data Rate (Max) | 
                                            125kbps | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            SPI | 
                                        
                                                                            
                                            | Current - Receiving | 
                                            6.5mA~11mA | 
                                        
                                                                            
                                            | Current - Transmitting | 
                                            48mA | 
                                        
                                                                            
                                            | Modulation | 
                                            4FSK, ASK, FSK, GFSK, GMSK, MSK, PSK | 
                                        
                                                                            
                                            | Sensitivity (dBm) | 
                                            -137 dBm | 
                                        
                                                                                                    
                            
                         
                                                AX5243-1-TA05 Overview
20-VFQFN Exposed Pad saves RF transceiver IC's board space. RF transceiver's mounting is done by using Surface Mount.As a result, it appears as a TxRx Only with transceiver RF's  a high efficiency and a high degree of reliability.High reliability is achieved using advanced transceiver RF' packaging Tape & Reel (TR).On this transceiver RF circuit board, there are 20 pins.By Surface Mount, transceiver has been mounted.The system operates on the basis of the frequency 27MHz~1.05GHz.
AX5243-1-TA05 Features
20-VFQFN Exposed Pad package
Surface Mount for mounting
TxRx Only 
 Tape & Reel (TR) is used
20 pins
AX5243-1-TA05 Applications
There are a lot of ON Semiconductor AX5243-1-TA05 RF Transceiver ICs applications. 
- LED Lighting
 - Low Noise Amplifier (LNA)
 -  
 - Wireless Price Tags
 - Switch
 - M2M Communication
 - Location and Asset Tracking
 - Industrial Controls
 - Chemical Sensors
 - POS Terminals