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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 utilizes a small-package SOD-323 low-capacitance ESD suppressor for protection, offering ESD 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 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 USB3.2 interface offers faster transmission speeds, with a data transfer rate of up to 10Gbps. It adds SSRX+/SSRX-/SSTX+/SSTX- pairs of signal lines internally compared to USB 2.0, requiring enhanced ESD and surge protection capabilities. Signal lines utilize a chip-scale package CSP0603-2L ultra-low capacitance ESD suppressor for protection, occupying minimal PCB area and providing 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 USB3.2 Gen2x2 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 space 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 WPE5V0N16AT1L1 & CLAMP0521PSCR1

The widely used HDMI 2.1 version currently supports a maximum transmission rate of up to 48Gbps. Given the high-speed and multi-channel signal transmission of the HDMI interface, it is essential to prevent ESD transient pulses during product usage from interfering with normal HDMI communication or potentially damaging the HDMI interface control chip. 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. The 5V Power line 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

6.1 ESD and Surge Protection Using WPE5V0N16AT1L1 & CLAMP0521PSCR1

The DP2.0 transmission rate is increased to 80Gbps. 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. DP_Power 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

7.1 ESD and Surge Protection Using ESD5B5CL

The headphone jack outputs AC power, with voltage related to the volume level, a maximum amplitude of 1V, and an operating frequency of less than 30kHz. The signal lines are protected using a small-package SOD-523 ESD suppressor, offering ESD protection up to 20KV.

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

8.1 ESD and Surge Protection Using CLAMP0504DT

The VGA interface uses analog signal transmission. The critical lines are the 3 RGB color component signals and the 2 scanning synchronization signals, HSYNC and VSYNC. The maximum frequency of the signal lines is 25MHz, so the capacitance of the ESD suppressors on these lines should be considered. Protection is provided by 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

9.1 ESD and Surge Protection Using WPE03VN92U1L2 & CLAMP0524P2 & WPE5V0N16AT1L1

The DVI interface comes in dual-channel and single-channel types. The data signals used by the digital video interface range approximately from -1.2V to 1.2V, with a data transmission rate of 1600Mbps. This solution provides protection based on a dual-channel design. Differential pair signals are protected using a small-package DFN2510-10L ultra-low capacitance array ESD suppressor, offering ESD protection up to 15KV. General signal lines are protected using a small-package DFN1006-3L low-capacitance ESD suppressor, with optional ESD protection up to 20KV. The 5V line 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

10.1 ESD and Surge Protection Using WPE5V0N16AT1L1 & WPE05VN92ULA

The PS/2 interface uses data signals with a maximum value of 5V and a data transfer rate of 10Kbps. At this data transfer rate, the capacitance of the suppressor does not need to be considered. It is necessary to protect the Data and Clock signal lines from ESD damage, as well as to protect the 5V power supply from both ESD and surge damage. A small-package DFN1006-3L low-capacitance ESD suppressor is used for protection, offering ESD protection up to 20KV. VCC is protected using a small-package DFN1610 ESD suppressor, with optional ESD protection up to 25KV.

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

11.1 ESD and Surge Protection Using CLAMP1511P1

RS232 typically uses a 9-pin connector. On TxD and RxD lines, logic "1" is represented by -3V to -15V; logic "0" is represented by +3V to +15V. On control lines such as RTS, CTS, DSR, DTR, and DCD, the signal is active at +3V to +15V and inactive at -3V to -15V. 15V protection is selected based on the logic levels. A small-package DFN1006 ESD suppressor is used for protection, offering ESD protection up to 30KV.

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

12.1 ESD and Surge Protection Using CLAMP0524P2

eSATA can achieve a maximum transfer speed of 3Gb/s. eSATA is an external interface for SATA, but it uses more durable cables and connectors. As an external connection standard, it must fully meet requirements for strength, anti-electromagnetic interference, and cable flexibility. Protection between signal lines is provided by a small-package DFN2510-10L ultra-low capacitance array ESD suppressor, which occupies minimal PCB area and offers optional ESD protection up to 20KV.

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

13.1 ESD and Surge Protection Using CLAMP0514DT

The RS-485 transceiver has a common-mode voltage range of -7 to +12V and a maximum transmission speed of up to 10Mbps. The front end uses a semiconductor discharge tube for common-mode lightning protection up to 6KV (10/700μs), ensuring high reliability. The back end is protected using the SM712 RS485-dedicated ESD suppressor, offering ESD protection up to 8KV.

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

14.1 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