【Daily Highlight】Slkor Releases SLESD5411N: DFN1006 Package, Building an ESD Protection Barrier for High-Density Circuits

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2025-08-06 16:23:04 920

In the current context of accelerated functional integration of smart devices, electronic equipment is facing the dual challenges of "space limitations" and "performance necessities": on one hand, PCB layout density has increased by more than 30%, making traditional protection devices difficult to adapt; on the other hand, high-frequency signal transmission rates have exceeded 10Gbps, placing stringent requirements on ESD protection devices for low capacitance and low interference characteristics. Slkor has specifically launched the SLESD5411N low-capacitance ESD protection diode, which, with its ultra-small DFN1006 package and 150W peak power, provides a flexible solution for single-line protection in consumer electronics and industrial equipment.

As a transient voltage suppressor designed for parasitic-sensitive systems, the SLESD5411N achieves precise balance in core performance: the reverse working voltage (VRWM) reaches 7.0V, suitable for medium and low-voltage circuits; the minimum reverse breakdown voltage (VBR) is 7.5V, ensuring no interference with signal transmission during normal operation; the forward clamping voltage (VC) is only 12V under 1A pulse and 19V under 8A pulse, which can quickly limit transient overvoltage to a safe range and protect backend chips. Its 15pF junction capacitance (CJ) and 0.2μA reverse leakage current (IR) perfectly balance high-frequency signal compatibility and low power consumption requirements, maintaining signal integrity even in high-speed data links.

In terms of protection capability, the device complies with IEC 61000-4-2 Level 4 certification, with both air discharge and contact discharge reaching ±25kV. It can withstand a peak pulse current of 8A (8/20μs) with a peak pulse power of up to 150W, and combined with a response speed of <1ns, it can instantly suppress electrostatic and surge interference. The adopted DFN1006 package (dimensions 0.55-0.65mm × 0.95-1.05mm) saves 40% space compared to the traditional MLV (0402) package, supports lead-free reflow soldering (260℃/10s), complies with RoHS and UL 94V-0 flame retardant standards, and is suitable for high-density layout scenarios such as notebook computers and servers.

The core advantages of the product are concentrated in three aspects:

● Super-strong protection redundancy: ±25kV ESD protection and 150W pulse power cover extreme interference scenarios in consumer electronics and industrial equipment;

● High-frequency low interference: 15pF low junction capacitance has minimal impact on high-speed signal transmission, suitable for high-frequency interfaces such as serial ports and parallel ports;

● Flexible integration: The DFN1006 package supports independent protection of single lines, replacing traditional MLV devices, providing design flexibility for space-constrained scenarios.

Application fields widely cover various electronic devices: computing equipment such as notebook computers, desktop computers, and servers; consumer electronics such as projection TVs, mobile phones and accessories; portable devices such as portable instruments and MP3 players. It performs particularly well in the protection of space-sensitive I/O ports.

A responsible person from Slkor's protection device R&D department stated, "The core design of SLESD5411N is 'precise adaptation' — achieving 150W protection power with 15pF capacitance, and breaking the contradiction between 'protection performance and space occupation' with the DFN1006 package. This is a targeted response to the trend of 'high density and high frequency' in electronic devices, making single-line protection no longer limited by space constraints."

Currently, the SLESD5411N has achieved stable mass production, adopting 7-inch tape and reel packaging (10,000 pieces per reel) and supporting bulk purchasing. For technical manuals or samples, 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.

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【Daily Highlight】Slkor Releases SLESD5411N: DFN1006 Package, Building an ESD Protection Barrier for High-Density Circuits

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