Product Overview

The SMAJ30A is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for protecting sensitive electronic devices. It effectively shields circuits from voltage transients caused by lightning, ESD, and other transient events. With a 400W peak pulse power capability and fast response, it quickly clamps overvoltage to ensure stable circuit operation, ideal for high-density surface-mount PCB designs.

Key Features

• High-Efficiency Transient Protection: Handles 400W peak pulse power at 10/1000μs waveform, protecting circuits from non-repetitive surge impacts.
• Precise Voltage Clamping: Low incremental surge resistance and typically <1.0ps response time limit overvoltage within safe ranges, reducing equipment damage risks.
• Low Leakage Current Design: Typical reverse leakage current (IR) is ≤1μA when the minimum breakdown voltage >12V, enhancing circuit efficiency and long-term reliability.
• Compact Surface-Mount Package: Uses a low-profile DO-214AC package to save board space, suitable for high-density SMT and optimized PCB layout.
• Wide Temperature Range & Compliance: Operates from -65°C to 150°C, with UL V-0 flammability rating, RoHS compliance, and halogen-free design for harsh environments and global standards.

Technical Specifications

Typical Applications

• Telecom Equipment: Protects I/O interfaces and power buses from surges, ensuring stable signal transmission in switches, routers, and other high-frequency communication devices.
• Computer Systems: Safeguards USB, HDMI, and data ports against ESD and EFT, preventing data corruption caused by transient voltage interference.
• Industrial Control: Shields sensor and controller circuits in harsh electromagnetic environments, enhancing anti-interference capabilities for automation lines and smart meters.
• Consumer Electronics: Protects charging interfaces and RF circuits in smartphones and tablets from daily ESD and voltage fluctuations, extending device lifespan.
• Automotive Electronics: Meets voltage transient protection needs in high-temperature, vibrating environments, suitable for in-vehicle cameras, navigation systems, and other automotive modules.

Why Choose SMAJ30A？

• Reliable Surge Protection: 400W peak pulse power and fast response effectively suppress lightning, ESD, and other transient overvoltages, ensuring circuit safety.
• Space-Optimized Design: Compact surface-mount package saves board space, ideal for miniaturized and high-density device integration.
• High Stability & Low Power: Low leakage current (IR≤1μA) reduces energy loss, while glass-passivated junction technology enhances long-term reliability.
• Harsh Environment Adaptability: Wide temperature range (-65°C to 150°C) and MSL Level 1 certification support high-temperature reflow soldering (260°C/40s) and rugged applications.
• Global Compliance & Safety: RoHS, halogen-free, and UL V-0 compliant, meeting environmental and safety standards in Europe, America, and beyond, minimizing supply chain risks.

SUNTOP COMPANY INTRODUCTION

Founded in 2000, Suntop is one of the leading global distributors of electronic
components, dedica ted to providing comprehensive procurement and supply chain services to the global electronics manufacturing industry. Our services include distribution, spot trading, PPV cost-saving projects, and inventory management. We not only offer high-quality products but also strive to assist our clients in achieving optimal solutions with minimal time and cost.
As a trusted partner for numerous OEMs, ODMs, CEMs, and EMS companies worldwide, our professional team manages millions of component records from thousands of trading partners across dozens of countries daily through our company database. We maintain close business relationships with major factories and distributors in North America, Europe, and Asia to ensure that our clients stay ahead in a highly competitive market.