Slkor Semiconductor, a trusted provider of reliable solutions in the field of electronic components, today announced the addition of the SM05 to its electrostatic discharge (ESD) protection diode product line. This device, housed in a standard SOT-23 package, is specifically designed to protect key data lines in industrial automation environments, including PLC communication ports, sensor interfaces, medium-speed field buses (such as RS-485), and human-machine interface (HMI) connections.

The SM05 features a 5V reverse working voltage (VRWM) and a minimum breakdown voltage (VBR min) of 6V, which precisely matches the interface levels commonly found in industrial control systems. Its core advantage lies in its extremely low clamping voltage (VC) of 9.8V, enabling it to efficiently discharge destructive ESD energy to ground, thus providing reliable protection for downstream microcontrollers, ADC/DAC converters, and communication chips. With a junction capacitance (CJ) of 300pF, the design not only offers effective protection but also ensures the integrity of medium-speed industrial data signals, preventing communication errors.

Electrostatic discharge (ESD) events are one of the leading causes of electronic device failure in industrial environments. Adding protective devices to critical data interfaces is essential, but improper selection may degrade signal quality or limit bandwidth. The Slkor SM05 is designed to address this challenge, balancing protection strength with signal transmission requirements:

Efficient Energy Discharge: The low clamping voltage (9.8V) combined with an optimized internal structure ensures rapid transfer of ESD energy (such as IEC 61000-4-2 Level 4, contact ±8kV/air ±15kV), safeguarding core ICs.

Signal Compatibility: The 300pF junction capacitance is ideal for industrial interfaces with moderate data transmission rates (below tens of Mbps), keeping signal attenuation within acceptable limits.

Industrial-grade Robustness: The SOT-23 package provides excellent mechanical strength and thermal performance, suitable for industrial environments with vibration and temperature fluctuations (operating temperature range: -55°C to +125°C).

Low Power Consumption: With a reverse leakage current (IR) of just 10µA, the device helps reduce system standby power consumption, meeting the green energy requirements for industrial equipment.

"In factory workshops, process control equipment, and other scenarios, interfaces are exposed to frequent plug/unplug cycles and complex electromagnetic environments, making ESD protection crucial," emphasized the product manager at Slkor Semiconductor. "With its 9.8V low clamping voltage and industrial-grade reliability, the SM05 provides engineers with an easy-to-integrate, cost-effective solution that effectively safeguards data link security for PLC I/O modules, sensor transmitters, motor driver control boards, and other key nodes."

The device has been widely adopted in:

Communication ports of Programmable Logic Controllers (PLCs) (RS-232/RS-485, CAN)

Signal interfaces for industrial sensors (temperature, pressure, flow)

Connection ports for Human-Machine Interface (HMI) touchscreens

Motor driver control signal lines

Medium and low-speed auxiliary interfaces for industrial Ethernet switches

The Slkor SM05 ESD protection diode, with its reliable protective performance, standard packaging compatibility (SOT-23), and optimization for industrial applications, is an ideal choice for reinforcing automation equipment data interfaces and enhancing overall system reliability and mean time between failures (MTBF).

About Slkor：

SLKOR, headquartered in Shenzhen, China, is a rapidly emerging national high-tech enterprise in the power semiconductor sector. With R&D centers in Beijing and Suzhou, its core technical team originates from Tsinghua University. As an innovator in silicon carbide (SiC) power device technology, SLKOR's products are widely used in new energy vehicles, photovoltaic power generation, industrial IoT, and consumer electronics, providing critical semiconductor solutions to over 10,000 clients globally. The company delivers more than 2 billion units annually, with its SiC MOSFETs and 5th-generation ultrafast recovery SBD diodes setting industry benchmarks in efficiency ratio and thermal stability. SLKOR holds over 100 invention patents and offers 2,000+ product models, continually expanding its IP portfolio across power devices, sensors, and power management ICs. Certifications including ISO 9001, EU RoHS/REACH, and CP65 compliance demonstrate the company's steadfast commitment to technological innovation, lean manufacturing, and sustainable development.