📌What was the original intention behind designing the SM712?

The SM712 is a TVS diode array designed for multi-point data transmission standard applications .Unlike traditional TVS diodes, the SM712 utilizes an array-based package design, offering a compact form factor while providing multi-channel signal protection. Its low capacitance characteristic ensures minimal impact on high-speed data transmission, making it ideal for applications such as communication buses, RS-232/RS-422 interfaces, and networking equipment.

📌SM712 main features

  • Integrated multi-channel protection:Protect two or more data lines, saving PCB space.
  • Low capacitance:55pF typical capacitance, compatible with high-speed signal transmission without affecting communication rates.
  • High surge capability: SM712 has a peak pulse power handling capability of 400 watts (tp=8/20μs), and can safely dissipate 17A of 8/20μs waveform surge current at a very low clamping voltage (compliant with IEC 61000-4-5 standard).
  • ESD protection: According to IEC 61000-4-2 standard, SM712 can withstand ±25kV contact discharge and air discharge, providing excellent ESD protection.
  • Fast response: Fast reaction speed (nanosecond level), can quickly suppress transient voltage and protect sensitive electronic components.
  • Packaging and compatibility: Adopt a small SOT-23 package to save circuit board space and comply with RoHS and Reach environmental standards.

📌SM712 typical applications

  • RS-485 transceiver protection: In RS-485 applications with extended common mode range, SM712 provides reliable line protection against transient voltage damage.
  • Security systems: Used to protect security monitoring equipment to ensure its stable operation in complex electromagnetic environments.
  • Automated teller machines (ATMs): Protect the communication interface of ATM machines to prevent failures caused by electrostatic discharge.
  • HFC systems and network equipment: Provide efficient circuit protection in hybrid fiber coaxial cable systems and other network equipment.


🌈Conclusion

SM712 electrostatic suppressor has become an important protection component in modern electronic design with its excellent ESD protection performance, compact size and reliability. Reasonable application of SM712 can significantly improve the anti-interference ability and reliability of electronic equipment, reduce the failure rate caused by electrostatic discharge, and extend the service life of the product.

Semiware has a comprehensive product lineup of circuit protection device products.For more details, please visit:https://en.semiware.com/tvs-array/sm712/

    📩Looking for a cost-effective alternative to Semtech? Try Semiware’s SM712 TVS diode array.”👇

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