SLPESD3V3S1BA-N is a single-channel transient-voltage-suppression device. It protects voltage-sensitive electronic components from transient over-voltage damage caused by Electro-Static Discharge (ESD), Cable Discharge Events (CDE) and Electrical Fast Transients (EFT). Featuring excellent clamping capability, low leakage current and fast response, this miniature SOD-523 surface-mount device is suitable for products with limited PCB space and provides over-voltage protection for single-channel I/O and data transmission lines. It adopts halogen-free material and is supplied in 7-inch tape-and-reel packaging with 3000 pieces per reel for high-volume SMT production.

Slkor Electrostatic Discharge Diode SLPESD3V3S1BA-N product photo

1. Key Product Parameters

1. Package & Mechanical Specifications: SOD-523 surface-mount package, halogen-free; 7-inch tape-and-reel, 3000pcs per reel; UL94V-0 flammability rating; supports 260℃ / 10s high-temperature reflow soldering.
2. Electrical Voltage Parameters (Tamb=25℃): Maximum reverse working voltage \(V_{RWM}\): 3.3V; minimum reverse breakdown voltage \(V_{BR}\): 3.6V at \(I_T=1\mathrm{mA}\); maximum reverse leakage current: 1.0μA under rated 3.3V voltage.
3. Surge Power: Peak pulse power of 60W for 8/20μs pulse waveform.
4. ESD Rating (IEC61000-4-2): ±30kV contact discharge, ±30kV air-gap discharge.
5. EFT Performance (IEC61000-4-4): 40A (5/50ns).
6. Clamping Voltage: Max 6.5V under 8/20μs with 1A pulse current; max 12.0V under 8/20μs with 5A pulse current; typical TLP clamping voltage: 9V under IEC61000-4-2 Level 4 equivalent condition.
7. Junction Capacitance: Maximum 16.5pF at zero-bias and 1 MHz test frequency.
8. Temperature Parameters: Operating temperature: -40℃ ~ +150℃; storage temperature: -40℃ ~ +150℃.
9. Protection Channel: One single device protects one I/O signal line.

2. Core Product Features

1. High-grade ESD Resistance: Complies with IEC61000-4-2, providing ±30kV protection for both contact and air discharge, and offers suppression for IEC61000-4-4 electrical fast transients.
2. Good Clamping Performance: It rapidly clamps surge voltage to a low level when transient surges occur, effectively protecting downstream sensitive chips.
3. Low Leakage Current: Leakage current is limited within 1.0μA at rated operating voltage with low static power consumption, ideal for battery-powered equipment.
4. Low Junction Capacitance: Maximum 16.5pF with minor interference to high-speed signals, applicable for data and high-speed transmission interfaces.
5. Miniature Surface-mount Package: Compact SOD-523 footprint saves PCB space for miniaturized electronic products.
6. Environmental-friendly & Process-compatible: Halogen-free material meets environmental requirements and is compatible with standard SMT reflow soldering processes.
7. Single-channel Protection: One device realizes ESD and surge over-voltage protection for one I/O port.

3. Main Application Fields

• Mobile handsets and accessories
• Microprocessor-based electronic equipment
• Personal Digital Assistants (PDAs)
• Notebook computers, desktop computers and servers
• Portable instrumentation
• Networking and telecommunication equipment
• Serial ports and parallel ports
• Protection for various peripheral interfaces

4. Engineering Design Recommendations

1. PCB Layout and Routing: Place the device as close as possible to the protected I/O connector to shorten signal paths. Keep ground-return traces short and wide to reduce parasitic inductance, ensuring fast diversion of surge energy to ground and preventing clamping performance degradation.
2. High-speed Signal Evaluation: Due to intrinsic junction capacitance, evaluate the impact of maximum 16.5pF capacitance on signal integrity for high-speed signal lines to avoid signal attenuation and waveform distortion.
3. Power Derating: Derate peak pulse power according to the datasheet derating curve when ambient temperature exceeds 25℃. Full-power operation is prohibited under high-temperature conditions.
4. Operating-voltage Matching: The \(V_{RWM}\) of this device is 3.3V, intended only for 3.3V signal or power circuits. Continuous DC voltage shall not exceed the maximum reverse working voltage; otherwise leakage will rise and permanent device damage may occur.
5. Surge Condition Note: The device is designed only for short-duration transient pulses such as ESD, CDE and EFT. It cannot withstand sustained over-voltage which will cause direct device failure.
6. Soldering Process Control: The peak reflow temperature shall not exceed 260℃ and soldering time shall be limited within 10 seconds to avoid thermal damage.

5. Product Summary

SLPESD3V3S1BA-N is a single-channel 3.3V transient-voltage suppressor in SOD-523 package. It delivers ±30kV ESD protection with advantages of low leakage current, low junction capacitance and fast clamping response. Its small footprint fits high-density PCB layouts.

This component is mainly used for ESD and transient over-voltage protection of 3.3V I/O interfaces and data transmission lines, widely adopted in consumer electronics, computers, telecommunication and portable instruments. Proper component placement, grounding routing, voltage matching and high-temperature power derating are required in engineering practice to obtain full protective performance.

About Slkor：

Slkor has research and development offices in Busan, South Korea, Beijing, China, and Suzhou, China. Most of the wafer manufacturing and packaging and testing are carried out within China. The company employs and collaborates with individuals and organizations worldwide, with a laboratory for product performance and reliability testing and a central warehouse located at its headquarters in Shenzhen. Slkor has filed for over a hundred invention patents, offers more than 2,000 product models, and serves over ten thousand customers globally. Its products are exported to countries and regions including Europe, the Americas, Southeast Asia, and the Middle East, making it one of the rapidly growing semiconductor companies in recent years. With well-established management systems and streamlined workflows, Slkor has rapidly enhanced the brand awareness and reputation of its "SLKOR" brand through its outstanding quality and standardized services. Its product range includes three major series: diodes, transistors, and power devices, with recent introductions of new products such as Hall elements and analog devices, expanding its presence in sensors, Risc-v microcontrollers, and other product categories.