SLPESD3V3S1BA-N is a transient-voltage suppressor intended to protect voltage-sensitive electronic components against transient over-voltage shocks caused by Electro-Static Discharge (ESD), Cable Discharge Events (CDE) and Electrical Fast Transients (EFT). With excellent clamping performance, low leakage current and fast response speed, this component adopts the miniature SOD-523 surface-mount package for designs with limited PCB space, and provides over-voltage protection for single-channel I/O and data transmission lines. It is made of halogen-free material, supplied in 7-inch tape-and-reel packaging with 3000 pieces per reel, and compatible with high-volume SMT assembly processes.

Slkor Electrostatic Discharge Diode SLPESD3V3S1BA-N product photo

1. Key Product Parameters

1. Package & Packaging: SOD-523 surface-mount package, halogen-free; 7-inch tape-and-reel, 3000pcs per reel; UL94V-0 flammability rating; capable of 260℃ / 10s high-temperature reflow soldering.
2. Electrical Voltage Parameters: Maximum reverse working voltage \(V_{RWM}\): 3.3V; minimum reverse breakdown voltage \(V_{BR}\): 3.6V @ \(I_T=1\mathrm{mA}\); maximum reverse leakage current: 1.0μA at 3.3V operating voltage.
3. Surge Withstand Capability: Peak pulse power reaches 60W under 8/20μs pulse waveform.
4. ESD Performance (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 at 1A peak pulse current; max 12.0V under 8/20μs at 5A peak pulse current; typical TLP clamping voltage: 9V.
7. Junction Capacitance: Maximum 16.5pF at zero-bias voltage and 1 MHz test frequency.
8. Temperature Range: 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-level ESD Protection: Compliant with IEC61000-4-2 standard, offering ±30kV protection for both contact and air discharge; it also suppresses electrical fast transients defined by IEC61000-4-4.
2. Excellent Clamping Performance: It responds rapidly to transient over-voltage and clamps surge voltage to a low level to safeguard downstream sensitive semiconductors.
3. Low Leakage Current: Leakage current ≤1.0μA at rated 3.3V, featuring low static power consumption and suitable for battery-powered electronic products.
4. Low Junction Capacitance: Maximum 16.5pF, introducing minor distortion to high-speed data signals and suitable for various high-speed transmission interfaces.
5. Miniature Surface-mount Package: Compact SOD-523 footprint saves PCB space and supports miniaturized product designs.
6. Environmental-friendly & Process-compatible: Halogen-free material meets environmental requirements; supports 260℃ high-temperature reflow soldering for standard SMT manufacturing.
7. Single-channel Protection: One single device provides ESD and surge over-voltage protection for one I/O port.

3. Main Application Fields

• Mobile handsets and mobile accessories
• Microprocessor-centric electronic equipment
• Personal Digital Assistants (PDAs)
• Notebooks, desktop computers and servers
• Portable instrumentation
• Networking and telecommunication equipment
• Serial and parallel interfaces
• ESD protection for various peripheral interfaces

4. Engineering Design Recommendations

1. PCB Layout and Routing: Place the protection device as close as possible to the protected I/O connector to shorten signal traces. Keep ground-return traces short and wide to reduce parasitic inductance, so that transient energy can be diverted to ground quickly and clamping performance will not degrade.
2. High-speed Signal Evaluation: Since the device has intrinsic junction capacitance, evaluate the influence 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 power-derating curve when ambient temperature is higher than 25℃. Full-power operation is forbidden under high-temperature conditions.
4. Voltage Matching Requirement: The maximum reverse working voltage is 3.3V. It shall only be used on 3.3V signal or power lines. Continuous DC voltage exceeding \(V_{RWM}\) will cause abnormal leakage or permanent device damage.
5. Application Limitations: This component is designed for short-time transient pulses such as ESD, CDE and EFT. It cannot sustain long-duration over-voltage, which will directly lead to device failure.
6. Soldering Control: The peak reflow temperature shall not exceed 260℃ and soldering duration shall be kept within 10 seconds to prevent thermal damage.

5. Product Summary

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

This component is mainly applied for ESD and transient over-voltage protection on 3.3V I/O ports and data transmission lines, widely used in consumer electronics, computers, telecommunication equipment and portable instruments. In practical engineering, close-to-connector placement, optimized grounding routing, proper voltage matching and high-temperature power derating are required to achieve 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.