Industrial Power Supply Surge Protection: AK Series High-Power TVS | Single Component Replaces Multi-Stage Design

1️⃣ Surge Challenges Faced by Industrial Power Supplies

With the rapid development of Industry 4.0, smart manufacturing, and outdoor industrial equipment, 24V/48V industrial control power supplies are facing increasingly stringent electromagnetic environments:

Frequent mains voltage fluctuations
Transient impacts from equipment start-up and shutdown
Outdoor lightning strikes and induced surges
Interference introduced by long-distance cabling

These factors pose a serious threat to core equipment such as PLCs, servo drives, and industrial communication modules.

2️⃣ Limitations of Traditional Multi-Level Protection Schemes

Industrial power supplies typically employ a multi-level protection scheme: GDT + MOV + decoupling components + low-power TVS. While this provides some protection, it has certain limitations.

3️⃣ Core Advantages of AK Series High-Power TVS

3.1 Precise Clamping Protection

For overvoltage-sensitive industrial core components such as PLC modules, the 24V model clamps a voltage ≤40V, and the 48V model ≤80V. Compared to traditional MOV solutions, it can suppress overvoltages caused by power grid fluctuations and lightning strikes within safe thresholds more quickly and accurately.

3.2 Nanosecond-Level Ultra-Fast Response

Industrial surge impacts are measured in nanoseconds. The Bluebaby TVS has a response time as low as 0.5ns, rapidly dissipating surge energy and ensuring continuous and stable operation of the production line.

3.3 Two-Way Protection and System Flexibility

The two-way protection design can withstand both forward and reverse surges; it supports parallel deployment, easily building a high surge current protection system to cope with outdoor lightning strikes, concentrated equipment start-ups and shutdowns, and other impacts.

4️⃣ Comprehensive Electrical Parameter Coverage

The AK series covers a variety of industrial application environments:

Wide Peak Pulse Current Coverage: Offers multiple ranges including 1KA, 3KA, 6KA, and 10KA, accurately matching protection needs from ordinary workshop power grid fluctuations to outdoor areas with strong lightning strikes;

High Peak Power: Peak power (Pppm) ≥3000kW (8/20μS waveform), capable of quickly absorbing and dissipating the enormous energy generated by equipment start-ups and shutdowns and lightning strikes, preventing self-damage and extending service life;

Operating Temperature: -55℃~+125℃, ensuring stable operation in both frigid outdoor wind power control cabinets and high-temperature, high-humidity production workshops.

5️⃣ Multi-dimensional Anti-interference and Standard Compliance

Compliant with IEC 61000-4-2 (ESD) standard, it can withstand electrostatic interference of 15kV air discharge and 8kV contact discharge, avoiding signal disturbance and data loss caused by static electricity in industrial sensors and PLC communication ports;

Compliant with IEC 61000-4-4 (EFT) standard, it can effectively resist electrical fast transient bursts;

Compliant with IEC 61000-4-5 (surge) standard, it can withstand surge impacts caused by lightning strikes and power grid fluctuations, and is suitable for complex scenarios such as outdoor photovoltaic inverters, rail transit control cabinets, and mining machinery;

For the industrial sector, compliance is a rigid requirement for product selection. The AK series high-power TVS Diode meets the core standards and industry specifications in the industrial control field.

Conclusion

Semiware’s AK Series high-power TVS redefines industrial power surge protection with a single-device architecture, providing high reliability, simplified design, and full-scenario adaptability for 24V/48V industrial power systems, accelerating the evolution toward more integrated and robust industrial electronics.

👉 For full specifications and selection of AK Series High Power TVS devices:

https://en.semiware.com/products/high-current-tvs-diodes