Switches

1.1 Electrostatic and Surge Protection Using LANTSPD-C8 & WPE3V3D3ULA

This solution is applicable for transmission rates of 10Mbps/100Mbps/1000Mbps/2.5Gbps/5Gbps. The secondary stage utilizes a compact SOD-323 low-capacitance ESD suppressor for protection, offering electrostatic discharge protection up to 30KV, effectively preventing interference caused by static electricity. The primary stage employs a semiconductor discharge tube in conjunction with an RC circuit, providing effective common-mode surge protection up to 8KV (10/700μs).

Compliant Standards: ESD IEC 61000-4-2 Level 4, Surge IEC 61000-4-5 Level 4 (Communication Combination Wave)

2.1 Electrostatic and Surge Protection Using WPT5V0D1MF & WPE05N92ULA

USB 2.0 typically employs line-to-ground electrostatic and surge protection technology, with a maximum signal rate of 480Mbit/s. A TVS diode in an SOD-123FL package is used between VCC and GND, providing electrostatic discharge protection up to 30KV. The signal lines are protected by a low-capacitance ESD suppressor in a compact DFN1006-3L package, offering electrostatic discharge protection up to 20KV.

Compliant Standards: ESD IEC 61000-4-2 Level 4, Surge IEC 61000-4-5

3.1 Electrostatic and Surge Protection Using WPE5V0N16AT1L1 & CLAMP0521PSCR1

Compared to previous versions, the USB 3.2 interface features a faster transmission rate, with data transfer speeds up to 10Gbps. It adds SSRX+/SSRX-/SSTX+/SSTX- differential signal pairs internally, requiring enhanced electrostatic discharge and surge protection capabilities. The signal lines are protected by ultra-low capacitance ESD suppressors in a chip-scale CSP0603-2L package, which occupies minimal PCB area and provides ESD protection up to 20KV. Vbus is protected by an ESD suppressor in a compact DFN1610 package, offering ESD protection up to 25KV.

Compliant Standards: ESD IEC 61000-4-2 Level 4, Surge IEC 61000-4-5

4.1 Electrostatic and Surge Protection Using WPE3V3D3ULA, SMBJ58CA, and 5.0SMDJ58CA

Power over Ethernet (PoE) technology combines network data with a 48V DC power supply to power remote devices such as security cameras and smart access control systems, making it highly susceptible to various interferences. The secondary stage utilizes a low-capacitance ESD suppressor in an SOD-323 package, providing ESD protection up to 30KV, effectively preventing interference caused by static electricity. The primary stage employs a 5KW TVS diode for protection, with device protection up to 8KV (10/700μs). The DC power supply is protected by a 400W TVS diode, offering device protection up to 400V (8/20μs).

Compliant Standards: ESD IEC 61000-4-2 Level 4, Surge IEC 61000-4-5 Level 4