onsemi

SMF05T2G

SMF05T2G Description

The SMF05T2G from onsemi is a surface-mount TVS (Transient Voltage Suppression) diode designed for general-purpose ESD (electrostatic discharge) and transient voltage protection. This 4-channel unidirectional Zener diode offers a 5V reverse standoff voltage (V_RWM) and a minimum breakdown voltage of 6V, ensuring robust protection for low-voltage circuits. With a peak pulse current rating of 12A (8/20µs) and a clamping voltage of 12.5V at Ipp, it effectively suppresses fast transients while maintaining low leakage. The device features a low capacitance of 90pF @ 1MHz, making it suitable for high-speed signal lines without compromising signal integrity. Packaged in SC88A (SOT-363) and supplied in tape & reel (TR), it is optimized for automated assembly.

SMF05T2G Features

• High Surge Protection: 200W peak pulse power (10/1000µs) and 12A surge current (8/20µs) for robust transient suppression.
• Low Clamping Voltage: 12.5V max at rated current, ensuring minimal stress on protected components.
• Low Capacitance: 90pF @ 1MHz minimizes signal distortion in high-speed applications.
• Multi-Channel Protection: 4 unidirectional channels in a compact SC88A package, saving PCB space.
• Compliance: ROHS3 compliant, REACH unaffected, and MSL1 (unlimited shelf life) for reliability in manufacturing.
• Wide Application Range: Suitable for ESD protection in USB, HDMI, and low-voltage digital interfaces.

SMF05T2G Applications

• Consumer Electronics: Protection for USB ports, audio/video inputs, and touchscreens in smartphones, tablets, and wearables.
• Industrial Systems: Safeguarding sensor interfaces, PLCs, and low-voltage control circuits from ESD and inductive transients.
• Automotive Electronics: CAN bus, infotainment systems, and telematics where ISO 7637-2 compliance is critical.
• Communication Devices: Ethernet PHY, RF modules, and baseband processors requiring low-capacitance ESD protection.

Conclusion of SMF05T2G

The SMF05T2G is a high-performance TVS diode offering multi-channel protection, low clamping voltage, and minimal capacitance, making it ideal for space-constrained, high-speed applications. Its compact SC88A package, compliance with environmental standards, and high surge capability distinguish it from similar diodes, ensuring reliable protection in consumer, industrial, and automotive systems. Though obsolete, it remains a viable choice for legacy designs requiring proven transient suppression.