| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            4 Weeks | 
                                        
                                                                            
                                            | Mount | 
                                            Through Hole | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Through Hole | 
                                        
                                                                            
                                            | Package / Case | 
                                            8-DIP (0.300, 7.62mm), 7 Leads | 
                                        
                                                                            
                                            | Number of Pins | 
                                            7 | 
                                        
                                                                            
                                            | Supplier Device Package | 
                                            DIP-8C | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~150°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | Published | 
                                            2009 | 
                                        
                                                                            
                                            | Series | 
                                            TOPSwitch®-HX | 
                                        
                                                                            
                                            | Part Status | 
                                            Active | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Max Operating Temperature | 
                                            150°C | 
                                        
                                                                            
                                            | Min Operating Temperature | 
                                            -40°C | 
                                        
                                                                            
                                            | Power (Watts) | 
                                            41W | 
                                        
                                                                            
                                            | Max Power Dissipation | 
                                            41W | 
                                        
                                                                            
                                            | Topology | 
                                            Flyback | 
                                        
                                                                            
                                            | Frequency - Switching | 
                                            66kHz | 
                                        
                                                                            
                                            | Internal Switch(s) | 
                                            Yes | 
                                        
                                                                            
                                            | Fault Protection | 
                                            Current Limiting, Over Temperature, Over Voltage | 
                                        
                                                                            
                                            | Duty Cycle | 
                                            78% | 
                                        
                                                                            
                                            | Output Isolation | 
                                            Isolated | 
                                        
                                                                            
                                            | Voltage - Breakdown | 
                                            700V | 
                                        
                                                                            
                                            | Radiation Hardening | 
                                            No | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                                                    
                            
                         
                                                TOP257PG Overview
This ac to dc converter is included in the package 8-DIP (0.300, 7.62mm), 7 Leads .The ac dc converter is available in Tube  case.There is a mounting point for this AC/DC converter in the way of Through Hole .It is recommended that the ac dc converter be operated at a temperature of -40°C~150°C TJ °C in order to achieve its full performance.When the switching frequency reaches 66kHz , the process is complete.On this ac/dc converter, there are 7  pins.It is suitable for mounting by Through Hole .It belongs to the family of TOPSwitch?-HX manufacturers.In addition, it is included in the DIP-8C package.The maximum 150°C  ensures that the AC to DC power converter runs stablily.A minimum working temperature of -40°C must be maintained for this isolated switch.
TOP257PG Features
Packaged with 8-DIP (0.300, 7.62mm), 7 Leads
Switching Frequency at 66kHz
With 7 pins
TOP257PG Applications
There are a lot of Power Integrations TOP257PG AC DC Converters applications. 
- Smartphones
 - Wireless System
 - Low power ac?dc Adapters for Chargers
 - DVD players
 - Portable audio
 - Industrial controls
 - Vacuum Cleaner
 - WiFi Wireless
 - Utility meters
 - Z-Wave