>> Application background        

1 Global warming, and  the thunderstorm weather increased.           
2 Network equipment is easy to be damaged by lightning damage with great harm.           
3 The maintenance cost is high after the network equipment is damaged by lightning,          
4 Network equipment with high surge protective capability becomes industry trends           

>> Program description and notes         

1 This scheme uses GDT to do common mode (eight wire) surge protection at the front end of the transformer.   

2 A low junction capacitance TVS removes differential mode energy at the back end of the transformer, meantime the TVS is used in the protection of static electricity with fast reaction time  

3 Compliance with 802.11 electrical standards.           
4 Meet IEC61000-4-5, GBT17626.5 and other surge test standards.           
5 Meet the IEC61000-4-2, GBT17626.2 and other static testing standards.           

>> Application:           
1 Industry / home computers / Laptops           
2 Switches / routers            
3 Network printer           
4 Set top box           
5 Intelligent Transportation Systems           
6 Other electronic device with Ethernet port     

 >> Protection circuit diagram

>> PulseTake protection devices
GDT: PSA201N:   200V±30%,  0.5KA,   < 0.5pF,  1GΩ.          
GDT: PTC151N:  150V±20%, 2.0KA,  0.8pF,    1GΩ.           
TVS1/TVS2/TVS3/TVS4:   PT3C031L:  Vb: 4.0V,   Vrwm: 3.0V,   1.2pF,  S

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