The P6SMB120A R4 is a surface-mount transient voltage suppressor (TVS) diode manufactured by Taiwan Semiconductor. It is designed to protect sensitive electronic equipment from voltage transients induced by lightning, inductive load switching, and ESD events. The 'R4' likely refers to the packaging or reel size.

Applications:

• Protection of sensitive electronic equipment
• Surge protection in consumer electronics, industrial, and telecommunications applications
• Overvoltage protection for I/O interfaces, VCC bus, and other vulnerable circuits
• Protection against induced lightning
• Use in automotive electronics systems

Features:

• Glass passivated junction
• Excellent clamping capability
• Low incremental surge resistance
• Typical IR less than 1μA above 120V
• Fast response time: typically less than 1.0 ps from 0 Volts to BV min
• High temperature soldering guaranteed: 260°C/10 seconds at terminals
• Plastic package has Underwriters Laboratory Flammability Classification 94V-0
• Matte tin plated leads, solderable per JESD22-B102

Benefits:

• Provides robust overvoltage protection, enhancing system reliability.
• Fast response time ensures quick clamping action, preventing damage to sensitive components.
• Surface mount SMA package allows for automated assembly and saves board space.
• High surge capability offers reliable protection against high-energy transients.
• Compliant with environmental standards, promoting responsible manufacturing.

Technical Specifications:

The P6SMB120A is a uni-directional TVS diode. The stand-off voltage is 120V. The breakdown voltage is typically 133V to 147V. The clamping voltage is typically 193V @ 3.1A. The peak pulse power dissipation is 600W. It operates over a temperature range of -55°C to +150°C. The package is SMA/DO-214AA. Maximum reverse leakage current is 1 uA at the working voltage. The forward voltage drop is approximately 3.5V.