| 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 | 2012 | 
                                                                            
                                            | Series | TOPSwitch®-HX | 
                                                                            
                                            | Part Status | Active | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Max Operating Temperature | 150°C | 
                                                                            
                                            | Min Operating Temperature | -40°C | 
                                                                            
                                            | Power (Watts) | 28W | 
                                                                            
                                            | Max Power Dissipation | 28W | 
                                                                            
                                            | 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 | 
                                                                                                    
                            
                         
                                                TOP254PG Overview
In the package 8-DIP (0.300, 7.62mm), 7 Leads , the ac to dc converter is embedded.You can get it in AC/DC power converter Tube .A AC/DC converter of this type is mounted in the way of Through Hole .This ac dc converter should be operated at a temperature of -40°C~150°C TJ °C so that it can deliver its performance.The switching frequency reaches 66kHz .A ac/dc converter with 7 pins is available.The ac dc converters is suitable for mounting by Through Hole .It belongs to a manufacturer family of TOPSwitch?-HX .There is a DIP-8C  case to pack the power AC DC.The maximum 150°C  ensures that the AC to DC power converter runs stablily.Minimum working temperature of this isolated switch must not be lower than -40°C .
TOP254PG Features
Packaged with 8-DIP (0.300, 7.62mm), 7 Leads
Switching Frequency at 66kHz
With 7 pins
TOP254PG Applications
There are a lot of Power Integrations TOP254PG AC DC Converters applications. 
- Tablets
- AC--DC Adapter
- Battery Chargers
- SMPS house keeping power supplies
- Standby and Auxiliary Power Supplies Set Top Boxes (STB)
- Switching AC-DC Adapter
- Battery chargers for cellular phones
- Replacements for bulky plug-in transformers
- Set -Top Box (STB) Power Supply
- Adaptors for DSCs