| Parameters | 
                                    
                                                                                                            
                                        | Mfr | 
                                        Fremont Micro Devices Ltd | 
                                    
                                                                        
                                        | Series | 
                                        - | 
                                    
                                                                        
                                        | Package | 
                                        Tape & Reel (TR) | 
                                    
                                                                        
                                        | Product Status | 
                                        Obsolete | 
                                    
                                                                        
                                        | Mode | 
                                        Discontinuous (Transition) | 
                                    
                                                                        
                                        | Frequency - Switching | 
                                        - | 
                                    
                                                                        
                                        | Current - Startup | 
                                        50 µA | 
                                    
                                                                        
                                        | Voltage - Supply | 
                                        85V ~ 265 VAC | 
                                    
                                                                        
                                        | Operating Temperature | 
                                        -40°C ~ 125°C | 
                                    
                                                                        
                                        | Mounting Type | 
                                        Surface Mount | 
                                    
                                                                        
                                        | Package / Case | 
                                        8-SOIC (0.154", 3.90mm Width) | 
                                    
                                                                        
                                        | Supplier Device Package | 
                                        8-SOP | 
                                    
                                                                        
                                        | Base Product Number | 
                                        FT821 | 
                                    
                                                                        
                                        | Moisture Sensitivity Level (MSL) | 
                                        1  (Unlimited) | 
                                    
                                                                        
                                        | REACH Status | 
                                        REACH Unaffected | 
                                    
                                                                        
                                        | ECCN | 
                                        EAR99 | 
                                    
                                                                        
                                        | HTSUS | 
                                        8542.39.0001 | 
                                    
                                                                        
                                        | Standard Package | 
                                        2,500 | 
                                    
                                                                                                        
                            
                         
                                                PFC IC Discontinuous (Transition) 8-SOP