In modern electronic devices, the HDMI2.0 interface has become an important bridge to connect high-definition video and audio signals, while the USB 3.0 interface has become the core hub of high-speed data transmission and multi-function connection. However, these interfaces are also vulnerable to electrostatic discharge (ESD) and surge voltages, which can cause damage to the device or reduced performance. Shanghai Lei MAO Electronics provides a range of high-performance ESD protection devices to ensure the safety and reliability of high-speed interfaces such as HDMI and USB3.0. This article will focus on how to choose the right ESD protection device, especially for the challenge of 35V and above surge voltage.

Why choose ULC3324P10LV?

The ULC3324P10LV is a multi-loop ESD diode array recommended by Shanghai Leiditech Electronics for high-speed interfaces such as HDMI and USB 3.0. It has the following significant advantages:

- Strong surge protection: The ULC3324P10LV can withstand up to 14A (8/20µs) of surge current, far exceeding the requirements of 35V surge voltage.

Low clamp voltage: At 14A, tp=8/20us, the clamp voltage VC is only 7V, which means that it can quickly clamp the overvoltage to a low level in the event of an ESD event, protecting the sensitive components from damage, reducing the risk of circuit failure due to overvoltage, and improving the reliability of the entire system.

- Low leakage current: Leakage current is only nA level, enabling a more energy efficient design.

Extremely low junction capacitance: The ULC3324P10LV has a junction capacitance of 0.55pF (IO-GND), which is crucial for high-speed data lines (such as HDMI, USB3.0), as it ensures the integrity of signal transmission without compromising communication quality.

- Complies with the highest ESD standards: The ULC3324P10LV has the highest ESD shock dissipation value in the IEC 61000-4-2 (Level 4) international standard, which effectively protects HDMI and USB3.0 interfaces from contact discharges up to 30kV and air discharges up to 30kV.

Multiple protection: A single device can protect four data lines, saving space.

Leimo ULC3324P10LV specification main parameters

How to choose ESD protection device?

When choosing an ESD protection device, there are several key factors to consider:

1. IEC 61000-4-2 grade: Select ESD protection devices that comply with IEC 61000-4-2 standards to ensure that they can withstand a certain level of ESD impact. For high-speed interfaces such as HDMI and USB3.0, it is recommended to select devices that reach at least level 4.

2. Surge current tolerance: Select the ESD protection device that can withstand the surge current according to the surge current that may be encountered in the application scenario. For the protection requirements of 35V surge voltage, it is recommended to select a device that can withstand 10A and above.

3. Clamp voltage: Select ESD protection devices with low clamp voltage to reduce voltage spikes in surge events and protect sensitive circuits. For HDMI and USB3.0 interfaces, clamp voltage should be as low as 15V to ensure signal integrity and device safety.

4. Junction capacitance: For high-speed data lines, choose ESD protection devices with low junction capacitance to avoid affecting the quality of signal transmission. The ideal junction capacitance should be less than 1pF to ensure minimal signal interference.

conclusion

The ULC3324P10LV from Shanghai Lei-Mao Electronics is a high-performance backsweep ESD protection device specially designed for high-speed interfaces such as HDMI and USB3.0. It can not only withstand up to 14A surge current, but also has low clamping voltage and low junction capacitance. Ideal for high-speed interfaces such as HDMI and USB3.0 that need to be protected by 35V surge voltage. By selecting the right ESD protection device, you can ensure the safety and reliability of electronic devices in the face of electrostatic discharge and surge voltage, thereby improving the overall performance of the product and user experience.

About Leiditech Leiditech

Leiditech is a leading brand in the supply of EMC solutions and components, offering a wide range of products including ESD, TVS, TSS, GDT, MOV, MOSFET, Zener, inductors and more. Lei MAO has an experienced R & D team, can provide personalized customized services according to customer needs, to provide customers with the best quality solutions.