The P4SMAJ40AT/R7 is a surface mount Transient Voltage Suppressor (TVS) diode manufactured by Panjit. It is 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 SMA series, which is known for its compact size and reliable performance.

Applications:

• Protection of I/O interfaces
• Overvoltage protection in sensitive equipment
• Transient voltage suppression in automotive electronics
• Protection of data lines and power lines
• Use in communication devices, such as mobile phones and modems

Features:

• Surface Mount SMA package
• Reverse Standoff Voltage: 40V
• Breakdown Voltage: Typically 44.4V
• Clamping Voltage: Typically 64.8V
• Peak Pulse Power: 400W (10/1000μs waveform)
• Excellent clamping capability
• Low incremental surge resistance
• Fast response time: typically less than 1.0ps from 0 Volts to BV min
• Typical IR less than 5μA above 40V
• High temperature soldering guaranteed: 260°C/10 seconds at terminals
• Plastic package has Underwriters Laboratory Flammability Classification 94V-0

Benefits:

• Provides robust protection against voltage transients
• Compact size allows for use in space-constrained applications
• High surge capability ensures reliable protection under severe conditions
• Fast response time minimizes the risk of damage to protected components
• Reduces downtime and maintenance costs associated with transient-related failures
• Increases the overall reliability and lifespan of electronic equipment

Additional Details:

The P4SMAJ40AT/R7 is a unidirectional TVS diode, meaning it protects against positive voltage transients only. The SMA package facilitates easy mounting on printed circuit boards. This device conforms to industry standards for surge protection and reliability. The 'R7' suffix may indicate specific packaging or RoHS compliance.