The SMAJ120ATR is a surface mount Transient Voltage Suppressor (TVS) diode manufactured by SMC Diode Solutions. This device is designed to protect sensitive electronic components from voltage transients induced by lightning, inductive load switching, and Electrostatic Discharge (ESD).

Applications

• I/O interfaces
• VCC bus protection
• Signal lines
• Microcontroller protection
• Consumer electronics
• Industrial equipment

Features

• Unidirectional TVS Diode: Provides overvoltage protection in one direction.
• Low Clamping Voltage: Limits the voltage across the protected device during a transient event.
• Fast Response Time: Quickly responds to transient events, minimizing the risk of damage.
• Surface Mount Package: Facilitates automated assembly and reduces board space.
• High Peak Pulse Power Dissipation: Can withstand high energy surges without degradation.
• RoHS Compliant: Meets environmental standards.

Benefits

• Enhanced Equipment Reliability: Protects sensitive components from overvoltage damage.
• Extended Equipment Life: Reduces stress on components, leading to longer lifespan.
• Improved System Performance: Prevents system failures caused by voltage transients.
• Simplified Circuit Design: Reduces the need for other protection components.
• Cost-Effective Solution: Provides reliable protection at a competitive price.

Additional Details

The SMAJ120ATR has a standoff voltage (VRWM) of 120V and a breakover voltage (VBR) of approximately 133V. It features a peak pulse power dissipation of 400W. The clamping voltage (VC) is usually around 193V at a peak pulse current (IPP). The device is packaged in an SMA (DO-214AC) package suitable for surface mount assembly. The operating junction temperature range typically spans from -55°C to +150°C. This TVS diode is designed to quickly clamp overvoltages, preventing them from reaching sensitive components and causing damage. Its low clamping voltage and fast response time make it an effective solution for protecting electronic equipment from transient voltage events.

This Transient Voltage Suppressor is commonly used in a wide range of electronic applications to safeguard against voltage surges. Its robust design and compliance with industry standards make it a dependable choice for diverse electronic devices requiring overvoltage protection. Its effectiveness in clamping transient voltages ensures the reliable operation and longevity of the protected equipment.