Mobile phone

1.1 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

2.1 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

3.1 ESD and Surge Protection Using CLAMP0514DT

When connecting a SIM card to a mobile phone, a minimum of 5 connections are required: Vcc for power, CLK for clock, Reset for reset, GND for ground, and I/O for data input/output. NC is unused, and Vpp is the programming voltage. Given its wide range of applications, it is essential to prevent ESD damage caused by frequent cable insertion and removal. Protection is provided using a small-package SOT23-6L ultra-low capacitance array ESD suppressor, which offers compact size and high reliability, with optional ESD protection up to 30KV. The Vcc pin features a reverse current protection function, further enhancing reliability.

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

4.1 ESD and Surge Protection Using CLAMP0504DT

SD cards are a new generation of memory devices based on semiconductor flash memory. Due to frequent hot-swapping, they are highly susceptible to electrostatic discharge, with transmission speeds reaching up to 312MB/s. 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

5.1 ESD Protection Using CLAMP0511P

Key positions are frequently affected by electrostatic discharge from human touch. ESD protection is particularly necessary when the gaps around keys in small electronic devices are relatively large. Keys are typically controlled by the MCU GPIO, which operates at a low transmission rate, with a maximum GPIO toggle speed of up to 18MHz. Protection is provided using a small-package DFN1006 ESD suppressor, offering optional ESD protection up to 30KV.

Compliant with standards: ESD IEC 61000-4-2 Level 4