APPLICATION

>> 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, SOD-323