The SMF250A is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse. It is designed to protect sensitive electronic components from voltage transients induced by electrostatic discharge (ESD), electrical fast transients (EFT), and lightning surge events. This device is packaged in a small SMF (SOD-123FL) package, making it ideal for use in portable and space-constrained applications.

Applications

• Mobile phones
• Portable devices
• Wearable electronics
• LED Lighting
• General purpose protection

Features

• Small SMF (SOD-123FL) package
• Stand-off Voltage: 25V
• Peak Pulse Power: 200W (10/1000μs waveform)
• Glass passivated junction
• Fast response time
• Excellent clamping capability
• RoHS compliant

Benefits

• Provides robust protection against ESD, EFT, and surge events, improving the reliability of electronic devices.
• Small footprint allows for use in compact designs.
• Fast response time ensures effective clamping of transient voltages.
• Reduces downtime and repair costs associated with component failure due to voltage surges.
• Complies with industry environmental standards.

Detailed Specs

The SMF250A is a unidirectional TVS diode with a stand-off voltage of 25V. The peak pulse power dissipation is rated at 200W for a 10/1000μs waveform. The clamping voltage is designed to limit the voltage across the protected circuit to a safe level during a transient event. The device’s operating temperature range is typically from -55°C to +150°C. The reverse leakage current is very low, minimizing power consumption. It is essential to consult the manufacturer's datasheet for precise electrical characteristics, including the clamping voltage at specific test currents, reverse leakage current, forward voltage drop, and surge current capability. The datasheet also provides information on the device's capacitance and its ability to handle repetitive surge events.