In the current rapidly developing electronics industry, Electromagnetic Compatibility (EMC) technology and circuit protection design are crucial for ensuring the stability and safety of devices. As a leading enterprise in the circuit protection field, Engineer Andy Hu from Leiditech Electronics was invited to share its cutting - edge EMC technology and diverse circuit protection solutions on the Digikey platform at the Shanghai Munich Electronics Show. This sharing provided engineers and developers with new ideas for dealing with complex electromagnetic environments.

EMC Technology: From Theory to Practice

Electromagnetic compatibility requires that electronic devices can not only resist external interference in a complex electromagnetic environment but also not interfere with other devices. Leiditech Electronics emphasizes that the core to achieving this goal lies in "rationally selecting circuit protection components" and optimizing the design according to different application scenarios. For example, high - speed interfaces (such as USB, HDMI, Ethernet, etc.) have extremely high requirements for signal integrity and need to use protection devices with low capacitance and fast response, while power supply lines need to balance high current - carrying capacity and high withstand voltage capabilities.

A free EMC laboratory built by Leiditech

Leiditech has a self - built and free EMC laboratory, which can conduct tests on electrostatic discharge (ESD, 30KV), electrical fast transient burst (EFT, 4KV), surge (8/20, 10/700, 10/1000), automotive load dump (7637 5a/5b), and component performance testing for customers (refer to the following table).

Comprehensive Analysis of Circuit Protection Components: Component Selection Determines Success

During the sharing, Engineer Andy Hu from Leiditech Electronics compared the performance parameters of multiple lightning protection components in detail (refer to the following table) to help developers accurately match their requirements.

Key Difference Analysis

l TVS vs ESD: Ordinary TVS has a relatively large leakage current (Andy Hundreds of μA) and is suitable for power supply lines. ESD, on the other hand, has a leakage current of less than 1μA and supports ultra - low capacitance packaging, making it an ideal choice for high - speed interface protection.

Breakdown Voltage Accuracy: TVS and ESD have the highest accuracy and are suitable for precision circuits. GDT and TSS have relatively low accuracy and are suitable for rough protection scenarios.

Interface Protection: Details Determine Reliability

With the popularization of high - speed interfaces such as USB Type - C, TH under bolt, and HDMI, signal integrity and anti - interference capabilities have become design challenges. Leiditech Electronics points out:

l High - speed Interfaces (such as USB 3.0+ and HDMI 2.1): ESD components should be used. Their ultra - low capacitance (<0.2pF) can avoid signal attenuation.

l Power Interfaces (such as Lightning and Micro USB): TVS or MOV is recommended, which can balance fast response and high current - carrying capacity.

Industrial Equipment (Ethernet, XLR): Gas Discharge Tubes (GDT) can provide multi - level protection against lightning strikes and surges.

Technical Advantages of Leiditech Electronics

Leiditech Electronics showcased several star products on the Digikey platform, including:

l Ultra - low capacitance ESD arrays, suitable for 5G communication and wearable devices.

l High - energy MOV series with a current - carrying capacity of up to 70kA, meeting the protection requirements of industrial power supplies.

l Integrated TVS modules, which simplify PCB layout and enhance the surge resistance of automotive electronics.

These products cover a voltage range from 1.0V to Andy Hundreds of volts and support customized packaging to flexibly adapt to different scenarios.

The requirements for these types of products are becoming more and more stringent. Generally, consumer electronics products are used indoors with relatively low anti - interference requirements, but they have more contact with people, so strict requirements are imposed on radiation indicators for Andy Human safety, especially for medical products. In addition, industrial control products operate in complex and harsh environments and have high reliability requirements, so their EMC requirements are increased. Moreover, since people are in vehicles when using automotive electronics, and vehicles often travel at high speeds, automotive electronic products must be foolproof, especially for the "Three Electric" systems (battery, motor, and electronic control), brakes, throttles, and steering wheels, to ensure that automotive failures caused by EMC problems of electronic products do not occur.

Application Cases: From Consumer Electronics to Industrial Equipment

Case 1: Leiditech is quite proud that in many cases, engineers failed the electrostatic test or automotive load dump test due to insufficient margin consideration in the early stage of IC selection. Leiditech then developed low - clamping - voltage and fly-back - resistant TVS and ESD components. Many customers passed the tests after changing the components.

Case 2: For cases that take a long time to rectify, the general rectification steps provided by Leiditech for customers are to change components first, then modify the PCB. If these are not enough, suggestions are given to adjust the structure. This is a relatively difficult case, and Leiditech has encountered many such cases. The main reason is that hardware engineers and structural engineers need to communicate fully in the early stage, and sensitive chips should be kept at a sufficient distance from gaps and interfaces.

Conclusion

Through the technical sharing on the Digikey platform, Leiditech Electronics not only demonstrated its profound accumulation in the circuit protection field but also provided global developers with a full - set of solutions from theory to practice. In today's increasingly complex electromagnetic environment, choosing suitable protection components is the first step in ensuring product reliability.

Leiditech is committed to becoming a leading brand in EMC solutions and component supply, providing products such as ESD, TVS, TSS, GDT, MOV, MOSFET, Zener diodes, and inductors. Leiditech has an experienced R & D team that can provide personalized customization services according to customer requirements and offer customers the best solutions.