Linkcom Manufacturing Co., Ltd

June 11, 2025, Taipei June 11, 2025, Taipei

In response to the increasingly severe electromagnetic interference and lightning risks, LinkCom Electronics (LinkCom 6821) officially launched the immunity testing service in accordance with the international standard ITU-T K.21 (07/2017), which is specially designed for key communication components such as LAN transformers to help customers improve the reliability and safety of their products in harsh environments.
This testing service targets abnormal voltage scenarios such as lightning strikes and surges, simulates interference sources that may be encountered in actual applications, and conducts strict verification according to ITU-T K.21 specifications to ensure that the product has sufficient anti-interference capabilities and meets the quality requirements of the global telecommunications and communication equipment market.

Why ITU-T K.21?
ITU-T K.21 is a technical standard developed by the International Telecommunication Union. It defines the immunity requirements for telecommunication equipment installed at the user end in the event of lightning strikes, power system anomalies, or electrostatic discharge. Compliance with this standard means that the product has internationally recognized protection capabilities and can effectively reduce the risk of equipment damage and communication interruption caused by surges.

This testing service is based on the K.21 standard, simulating interference sources that may be encountered in actual applications, and conducting strict verification to ensure that the product has sufficient anti-interference capabilities. Test items include:

•Lightning strike simulation surge test
•Overvoltage and overcurrent tolerance verification
•Grounding and connection safety check

“We are well aware that communication stability is crucial in application scenarios such as 5G, smart cities and industrial IoT,” said the LinkCom 6821 technical team. “Through this testing service, we not only help customers reduce the risk of product failure, but also accelerate their entry into the international market.”

For more test details or to make an appointment, please visit 
Lightning Strike Test Service Description_Magnetic Components_Technical Support LinkCom Electronics Co., Ltd. official website

About LinkCom
LinkCom Electronics was founded in 1995 and listed on the OTC market in 2022. It is a leading company in Taiwan's magnetic component industry. Its products include transformers, inductors and power modules, which are widely used in communications, automobiles and industrial fields. The company is committed to technological research and development and sustainable development, and continues to expand its global market.
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