SMAJ30A

The SMAJ30A is a type of transient voltage suppressor (TVS) diode, specifically designed to protect sensitive electronic components from voltage spikes and transients. It is part of the SMAJ series produced by various manufacturers, including FTR (Fujitsu Ten Corporation).

Physical Characteristics:

• Package Type: The SMAJ30A is housed in a DO-214AA (SMA) package, which is a small, surface-mount device. This package is designed for efficient thermal dissipation and is suitable for automated assembly processes.
• Dimensions: The typical dimensions of the SMA package are approximately 5.2 mm in length, 3.5 mm in width, and 1.5 mm in height, making it compact enough for use in space-constrained applications.
• Terminals: It features two leads that are usually made of copper and are plated with tin for enhanced solderability. The leads are designed for easy mounting on printed circuit boards (PCBs).

Electrical Characteristics:

• Reverse Stand-Off Voltage (V_RWM): The SMAJ30A has a reverse stand-off voltage of 30 volts, which means it can withstand this voltage without conducting.
• Clamping Voltage (V_C): When subjected to a transient voltage, the clamping voltage is typically around 45 volts, ensuring that the voltage does not exceed this level during a surge event.
• Peak Power Dissipation: The device can handle peak power dissipation of up to 400 watts for a short duration (typically 8/20 µs pulse), making it suitable for protecting against high-energy transients.
• Capacitance: The SMAJ30A has a low capacitance value, which minimizes signal distortion in high-frequency applications.

Applications:

The SMAJ30A is commonly used in various electronic applications, including:

• Telecommunications: Protecting communication lines from lightning strikes and other voltage surges.
• Consumer Electronics: Safeguarding devices like televisions, computers, and home appliances from voltage spikes.
• Automotive: Providing protection for sensitive electronic systems in vehicles against transients caused by load dumps or inductive switching.
• Industrial Equipment: Ensuring the reliability of control systems and sensors in industrial environments.

Performance:

The SMAJ30A is known for its fast response time, which is crucial for effectively clamping voltage spikes before they can damage sensitive components. Its robust design and high reliability make it a preferred choice for engineers looking to enhance the durability of their electronic designs.

In summary, the SMAJ30A from FTR is a reliable and efficient transient voltage suppressor that offers excellent protection for a wide range of electronic applications, ensuring the longevity and performance of sensitive components.