Reysens recently launched the world’s first visual sensor that integrates global exposure image technology with EVS event perception technology at the pixel level—ALPIX-Pizo. This groundbreaking technology is set to redefine the field of machine vision. Behind this innovative product, the SMDJ18A transient voltage suppression diode plays a crucial role as a key circuit protection component, silently safeguarding the sensor’s safe operation. This article delves into how the SMDJ18A provides reliable overvoltage protection for this revolutionary integrated visual sensor.

Slkor Transient Protection Diode SMDJ18A product photo

Protection Challenges of Integrated Visual Sensors

The ALPIX-Pizo integrated visual sensor combines the advantages of traditional image sensors and event cameras through pixel-level fusion technology. However, its complex circuit architecture comes with unique protection requirements:

Slkor Transient Protection Diode SMDJ18A specification

1. Multiple Voltage Domains: The sensor contains an 18V operational circuit, requiring high voltage stability.

2. High-Speed Data Interfaces: Event perception data streams need protection solutions with low interference.

3. Outdoor Application Environments: Industrial settings face threats such as power fluctuations and lightning strikes.

4. Precision Pixel Arrays: Millions of pixels are highly sensitive to electrostatic discharge.

With its 18V working voltage (VRWM) and 20V breakdown voltage (VBR min), the SMDJ18A transient voltage suppression diode is an ideal choice to protect these high-end visual sensors. Its 29.2V clamping voltage (VC) ensures that overvoltage events will not damage the delicate circuits, while its low 2uA reverse leakage current (IR) will not affect normal sensor operation.

Parameters of Slkor Transient Protection Diode SMDJ18A

Key Applications of SMDJ18A in Integrated Visual Systems

In advanced visual systems like ALPIX-Pizo, the SMDJ18A provides comprehensive protection:

1. Sensor Power Protection

   - Overvoltage protection for the 18V power supply line.

   - Suppression of surges and spikes on the power line.

   - SMC package supports up to 600W peak pulse power.

2. Data Interface Protection

   - Protects high-speed data transmission lines from ESD damage.

   - Maintains signal integrity, ensuring uninterrupted event data flow.

   - Fast response time (in the picosecond range) ensures timely protection.

3. Pixel Array Protection

   - Prevents electrostatic discharge from damaging delicate pixel units.

   - Works in conjunction with other protection components to create a multi-stage protection system.

   - Complies with IEC 61000-4-2 Level 4 standard (contact discharge of 8kV).

4. System-Level Protection

   - Wide temperature range suitable for industrial environments.

   - Reliable design to withstand mechanical vibrations and shocks.

   - Long-term stability ensures continuous protection throughout the product's life cycle.

In-Depth Technical Advantages

The technical parameters of the SMDJ18A perfectly match the protection needs of high-end visual sensors:

- Precise Voltage Matching: The 18V VRWM directly corresponds to the sensor's operating voltage.

- Strong Protection Capability: The 29.2V VC provides a safe voltage limit.

- Low-Interference Design: The 2uA IR does not impact the system’s power consumption budget.

- High Power Handling: The SMC package supports large energy transient events.

- Industrial-Grade Reliability: AEC-Q101 certification makes it suitable for harsh environments.

Compared to similar products, the SMDJ18A not only maintains high performance but also offers better temperature stability and a longer lifespan, making it especially ideal for visual systems operating 24/7.

Industry Trends and the Development of Protection Technology

With the widespread adoption of integrated visual technology, the circuit protection field is witnessing new trends:

1. Precision Voltage Matching: Protection devices need to perfectly match specific operating voltages.

2. Faster Response: There’s a need for faster response times to address nanosecond-level transient events.

3. Simplified Integration: Achieving comprehensive protection within limited space.

4. Stricter Standards: Protection solutions must meet stringent industrial and automotive requirements.

The SMDJ18A represents the next generation of circuit protection devices, with its technical features providing reliable protection for a variety of innovative visual systems. Market research indicates that as machine vision applications expand, the market for related protection devices will continue to grow at an annual rate of over 12%.

Conclusion

The launch of Reysens' ALPIX-Pizo integrated visual sensor marks a new era in machine vision technology. In this technological revolution, basic electronic components like the SMDJ18A transient voltage suppression diode play an irreplaceable role. Choosing professional circuit protection solutions is crucial for ensuring the reliability and durability of innovative visual systems. As visual sensing technology continues to advance across industries, the demand for precise and reliable protection will keep growing, creating ample opportunities for the development of electronic protection devices.

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.