The SMAJ15A is a surface-mount Transient Voltage Suppressor (TVS) diode from Littelfuse Inc. It's designed to protect sensitive electronic components from voltage transients induced by lightning, inductive load switching, and Electrostatic Discharge (ESD). This TVS diode is part of the SMAJ series, known for its compact SMA (Surface Mount Assembly) package and robust surge protection capabilities. The SMAJ15A is a unidirectional device, meaning it provides protection against positive polarity transients.

Applications

• Protection of I/O interfaces
• Voltage clamping
• Telecom equipment
• Industrial controls
• Consumer electronics

Features

• Unidirectional TVS diode
• Surface mount SMA package
• Glass passivated junction
• Excellent clamping capability
• Low incremental surge resistance
• Fast response time: typically less than 1.0 ps from 0 Volts to BV min
• Typical IR less than 1 μA above 10V
• High temperature soldering guaranteed: 260°C/10 seconds at terminals
• Plastic package has Underwriters Laboratory Flammability Classification 94V-0

Benefits

• Provides robust protection against transient voltage events, preventing damage to sensitive electronic components.
• Compact SMA package allows for space-saving design in electronic circuits.
• Fast response time ensures quick clamping of transient voltages, minimizing the risk of damage.
• High surge capability allows the diode to withstand high-energy transients without failure.
• Increases the reliability and lifespan of electronic products by protecting them from overvoltage conditions.

Additional Details

The SMAJ15A has a standoff voltage of 15V, meaning it doesn't conduct under normal operating conditions up to this voltage level. Its breakdown voltage is typically 16.7V, and its clamping voltage at a peak pulse current of 24A is 24.4V. The peak pulse power dissipation is 400W at a 10/1000 μs waveform. It is RoHS compliant and lead-free. The operating and storage temperature range is -55°C to +150°C.