The printer

1.1 ESD and Surge Protection Using LANTSPD-C8 & WPE3V3D3ULA

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

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

2.1 ESD and Surge Protection Using WPT5V0D1MF & WPE05VN92ULA

USB 2.0 typically employs line-to-ground ESD and surge protection technology, with a maximum signal rate of 480Mbit/s. A SOD-123FL package TVS is used between VCC and GND, providing ESD protection up to 30KV. For the signal lines, a small-package DFN1006-3L low-capacitance ESD suppressor is selected for protection, offering ESD protection up to 20KV.

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

3.1 ESD and Surge Protection Using WPE5V0N16AT1L1 & CLAMP0521PSCR1

Compared to previous versions, the USB 3.2 interface features faster transmission speeds, with a data transfer rate of up to 10Gbps. It adds SSRX+/SSRX-/SSTX+/SSTX- differential signal pairs compared to USB 2.0, requiring enhanced ESD and surge protection capabilities. The signal lines are protected using a chip-scale CSP0603-2L ultra-low capacitance ESD suppressor, which occupies minimal PCB area and provides ESD protection up to 20KV. Vbus is protected using a small-package DFN1610 ESD suppressor, offering ESD protection up to 25KV.

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

4.1 ESD and Surge Protection Using CLAMP0521PSCR1 & WPEXXXN16AT1L1 Series

The USB 3.2 Gen 2x2 protocol Type-C interface supports a signal transmission rate of up to 20Gbps and is compatible with the PD fast charging protocol, supporting up to 20V/5A. Type-C not only enhances data transfer speed but also increases power delivery capacity. The signal lines are protected using a chip-scale CSP0603-2L low-capacitance ESD suppressor, which occupies minimal PCB area and offers ESD protection up to 20KV. Vbus is protected using a small-package DFN1610 ESD suppressor, providing ESD protection up to 25KV.

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

5.1 ESD and Surge Protection Using CLAMP0504DT

The LPT interface is commonly used to connect printers or scanners. Its signal lines are similar to ordinary I/O transmissions. The interface has a total of 25 pins and a large form factor, making it susceptible to external ESD and surge interference when connecting. The signal lines are protected using a small-package SOT23-6L array ultra-low capacitance ESD suppressor, offering optional ESD protection up to 30KV.

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