As 5G communication speeds exceed 10Gbps and HDMI 2.0 transmission bandwidth jumps to 18Gbps, the requirements for electrostatic protection in high-speed signal links have entered the era of "nanoscale" precision — even an additional 0.1pF of capacitance can cause signal eye closure, and a single 8kV electrostatic discharge can instantly disable a radio frequency antenna or USB 3.1 interface. The SLESDPSA0402V05 ESD protection diode launched by Slkor, with its ultra-low 0.05pF junction capacitance and miniature 0402 package, has become the "zero-interference" protection benchmark for high-speed interfaces.
As a protection device designed for high-frequency and ultra-high-speed scenarios, the core breakthrough of SLESDPSA0402V05 lies in "invisible protection" — it adopts the 0402 package (maximum dimensions 1.10mm×0.62mm×0.45mm), which is only the size of a grain of rice, yet can easily fit into high-density layouts such as smartphone radio frequency modules and HDMI interfaces of high-definition set-top boxes without occupying extra space. More importantly, its typical junction capacitance of 0.05pF (tested at 10MHz) has a negligible impact on high-frequency signal transmission, like putting a "transparent protective cover" over high-speed links, which neither hinders signal flow nor resists electrostatic threats.
In terms of electrical performance, this diode achieves a perfect balance between "strong protection" and "low interference": the 5.0V reverse working voltage precisely adapts to low-voltage high-speed circuits, ensuring no interference with signal transmission during normal operation; the 450V trigger voltage acts like an intelligent*line, responding quickly (<1ns) when electrostatic discharge occurs, instantly clamping the overvoltage to 40V, thus building a safety barrier for backend chips. The ultra-low leakage current of 10nA is like a "micro-power gatekeeper," consuming almost no circuit energy and extending device battery life.
In terms of protection capability, it complies with the IEC 61000-4-2 standard, with air discharge up to 15kV and contact discharge up to 8kV, and can withstand thousands of electrostatic shocks while maintaining stable performance. Whether it is space static electricity encountered by mobile phone radio frequency antennas or contact discharge during USB 3.1 interface plugging and unplugging, it can quickly discharge the static electricity, avoiding signal interruption or chip damage.
From consumer electronics to communication equipment, the application scenarios of SLESDPSA0402V05 precisely cover high-speed interface clusters: data transmission lines of USB 3.0/3.1, high-definition video links of HDMI 1.3/1.4/2.0, signal paths of radio frequency antennas, and even storage links of SATA and eSATA interfaces can all achieve "zero-interference" protection through it. Its bidirectional protection design can efficiently handle both positive and negative static electricity, adapting to various high-speed differential signal lines.
A responsible person from Slkor's ultra-high-speed protection product line stated, "The design philosophy of SLESDPSA0402V05 is 'non-interference is the best protection' — the 0.05pF capacitance makes it 'invisible' in 10Gbps signals, and the 0402 package makes it 'disappear' in high-density PCBs, yet it activates instantly when static electricity strikes. This is the ultimate response to the trend of 'ultra-high-speed and miniaturized' interfaces."
Currently, SLESDPSA0402V05 has achieved stable mass production, adopting 7-inch tape and reel packaging (10,000 pieces per reel), supporting lead-free reflow soldering (peak temperature 260℃), and complying with RoHS standards. As the "invisible guardian" of high-speed interfaces, it is helping 5G terminals and high-definition devices build a solid electrostatic*line during ultra-fast transmission. For technical details, please visit Slkor's official website (SLKOR Semiconductor: Discrete Semiconductors, TVS、ESD、diodes、 components、transistors、mosfet、igbt、Rectifier、Discrete Power Devices、SCR、TRIAC、Zener Diode; Integrated Semiconductors, Op-amp、hall sensor、 Linear Regulator / LDO、DC-DC Convertor、AC-DC Convertor and Optocoupler).
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.