【Daily Highlight】SLKOR Bi-directional ESD Diode SLPESDNC2FD5VBS: Solid and Cost-Effective Protection for 5 V General-Purpose Interfaces

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2025-07-18 15:05:56 899

When USB 2.0 lines, push-buttons, SIM-card sockets, headphone jacks and other 5 V single-ended or low-speed differential links must simultaneously satisfy cost, reliability and space constraints, an ESD device with moderate capacitance, low clamping voltage and a tiny package is the engineer’s best ally. Slkor’s bi-directional ESD diode SLPESDNC2FD5VBS delivers exactly that: 15 pF typical junction capacitance, 10 V low clamping voltage, 5 V reverse working voltage (VRWM) and 5.6 V minimum reverse-breakdown voltage (VBR min) combine to give 5 V general-purpose digital ports a solid yet economical safeguard. Typical leakage is only 0.1 μA—virtually zero impact on system power.

Mission-critical, the diode shunts ±25 kV contact/air discharge and 5 A, 8/20 μs surges to ground before they reach sensitive I/Os, acting as the last line of*between smartphones, set-top boxes, wearables and the harsh outside world. Traditional TVS solutions that chase ultra-low capacitance often cause cost to skyrocket; SLPESDNC2FD5VBS leverages a mature process to strike an optimal balance among cost, capacitance and clamping, making it the “value-for-money gatekeeper” for high-volume consumer, industrial and automotive applications.

Practical protection window

VRWM = 5 V

VBR min = 5.6 V

This window guarantees that 5 V signal lines never trigger falsely during normal operation, yet snap on fast when an ESD strike arrives, securing USB 2.0, GPIO, keypad arrays, audio ports and more.

Acceptable clamping voltage

One-channel, 1 A TLP clamping: VC = 10 V

At nanosecond transient speeds this is comfortably below the withstand margin of common 5 V logic I/Os, keeping stress within safe limits.

15 pF junction capacitance

CJ = 15 pF typ. (@ VR = 0 V, f = 1 MHz)

While not suited for 10 Gbps links, it leaves USB 2.0 (480 Mbps), LEDs, push-buttons, low-speed UART and I2C signals virtually untouched while keeping costs attractive.

0.1 μA ultra-low leakage

IR = 0.1 μA typ. (@ VR = 5 V, 25 °C)

Max 0.1 μA (per datasheet) and still < 1 μA at 85 °C, giving battery-powered wearables, TWS earbuds and smart locks round-the-clock endurance.

Ultra-small DFN1006 package

1.0 mm × 0.6 mm × 0.37 mm

75 % smaller footprint than SOT-23; 0.37 mm profile fits beneath a Type-C tongue. A central exposed pad delivers low-impedance ground, enhancing
discharge efficiency. Ni/Pd/Au terminations are lead-free-reflow compatible; 7-inch tape-and-reel suits high-speed SMT lines.

Broad application spectrum

? Mobile: USB-C ports, headphone jacks, SIM slots, side keys, camera power rails

? Computing: HDMI 5 V detect, notebook USB 2.0, SSD power pins

? Automotive: 5 V camera rails, IVI key-backlights, tuner GPIOs

? Industrial & medical: PLC digital inputs, 5 V industrial-camera rails, portable probe interfaces

? Smart home: smart-lock contacts, TWS charging cases, robot bumper switches

Layout tips & technical support

Place SLPESDNC2FD5VBS ≤ 5 mm from the connector. Stitch the exposed pad directly to a solid ground plane—avoid long shared return paths. For differential pairs, verify that 15 pF does not impair signal integrity. Slkor supplies evaluation boards (EVB-SLPESDNC2FD5VBS), SPICE models and S-parameters for quick import into ADS, Sigrity, HFSS, etc. FAE support responds within 24 h and offers on-site ESD testing and co-debug services.

With 15 pF capacitance, 10 V clamping, a pragmatic 5 V / 5.6 V protection window and 0.1 μA leakage, Slkor’s SLPESDNC2FD5VBS sets a new benchmark for cost-effective ESD protection in 5 V universal interfaces, delivering a robust shield for the next generation of more affordable, more reliable and more compact electronic devices.

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 Bi-directional ESD Diode SLPESDNC2FD5VBS: Solid and Cost-Effective Protection for 5 V General-Purpose Interfaces

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