The semiconductor industry is increasingly integral to modern electronic devices. As the demand for high-speed data transmission and device protection grows, ESD (Electrostatic Discharge) protection technology has become crucial for enhancing the reliability and stability of electronic systems. As a global leader in semiconductor devices, Slkor is committed to providing high-performance ESD protection solutions. In this context, Slkor has introduced its ultra-low junction capacitance ESD protection diode, the SM24C series, designed to provide exceptional protection for high-speed data communication devices such as USB interfaces, ensuring stable operation in various complex electromagnetic environments.

Slkor Electrostatic Discharge Diode SM24C product photo

1. Advanced ESD Protection Technology

The SM24C series ESD protection diodes are specifically designed for USB interfaces and other high-speed data lines. These diodes effectively absorb and dissipate electrostatic discharge energy, preventing damage to electronic systems caused by external electrostatic or voltage fluctuations. The key feature of this series is the use of an ultra-low junction capacitance design, significantly reducing interference with data transmission signals, thereby ensuring signal integrity and meeting the stringent requirements for high-speed, stable transmission in modern electronic devices.

Slkor Electrostatic Discharge Diode SM24C specification

2. Technical Specifications of the SM24C Series

The technical specifications of the SM24C series diodes include:

VRWM (Maximum Working Voltage): 24V

VBR (Reverse Breakdown Voltage): Minimum 26.7V

IR (Reverse Leakage Current): 1μA

VC (Clamping Voltage): 43V

CJ (Junction Capacitance): 50pF

Package Type: SOT-23

These parameters indicate that the SM24C series diodes can withstand relatively high voltages during operation and effectively clamp voltages to protect the connected USB interfaces from electrostatic discharge. The junction capacitance of just 50pF ensures high-speed and stable signal transmission, while the ultra-low leakage current of 1μA further enhances the diode's ability to protect signal quality.

Parameters of Slkor Electrostatic Discharge Diode SM24C

3. Advantages for USB Interfaces

USB interfaces are widely used in modern electronic devices, especially in computers, smartphones, tablets, and other devices. With the continuous advancement of USB technology, data transmission speeds have increased, raising the requirements for protection circuits. In this scenario, the SM24C series ESD protection diodes, with their ultra-low junction capacitance, effectively protect USB interfaces from electrostatic discharge without interfering with high-speed data transmission.

Due to their excellent clamping performance and ultra-low capacitance, the SM24C series diodes can quickly respond and protect USB interfaces without compromising signal integrity. Whether in daily use or in harsh electromagnetic environments, these diodes provide reliable protection for data interfaces, preventing data loss or device damage.

4. The Dangers of Electrostatic Discharge and Protection Requirements

Electrostatic discharge is a significant risk for electronic devices, especially in high-frequency data interfaces. ESD can cause physical damage to devices, system failures, or data loss. Therefore, to ensure the long-term stable operation of devices, engineers must select appropriate ESD protection diodes to maintain stability during ESD events.

The SM24C series ESD protection diodes are designed with the high-frequency characteristics and compact space requirements of USB interfaces in mind. Their ultra-low junction capacitance design allows them to effectively absorb and dissipate electrostatic energy without compromising signal transmission quality. Compared to traditional ESD protection devices, the SM24C series performs better in high-speed data transmission, avoiding signal distortion and enhancing the system's immunity to interference.

5. Packaging and Installation Flexibility

The SM24C series ESD protection diodes are packaged in SOT-23, a compact package type that offers excellent thermal dissipation. In practical applications, the packaging design of the SM24C series diodes can accommodate various design needs, whether for space-constrained devices or systems requiring efficient heat dissipation. Additionally, the SOT-23 package ensures good compatibility and ease of soldering in automated production processes, reducing complexity during production and installation and improving manufacturing efficiency.

6. Conclusion

Slkor's SM24C ultra-low junction capacitance ESD protection diode, with its outstanding electrical performance, provides effective protection for USB interfaces and other high-speed data lines. Its ultra-low junction capacitance, high clamping voltage, and ultra-low leakage current characteristics make it an ideal choice for protecting modern electronic devices from electrostatic discharge interference. Whether in consumer electronics, automotive electronics, or industrial applications, the SM24C series ensures reliable ESD protection, guaranteeing the long-term stable operation of systems.

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.