SMF48A-M3-18 Circuit Protection

TVS Diode is an effective means of providing surge protection for sensitive electronic equipment and modules that are subjected to hazardous levels of ESD, EFT or electrical interference. SMF48A-M3-18 is one of the most advanced TVS diodes available today. Below is an in-depth overview of its features and applications.

Features

• High peak pulse power dissipation: 400W (10/1000 μs) or 600W (8/20 μs)
• Low on-state voltage
• High overvoltage capability
• Roughly symmetrical turn off
• Low forward voltage
• High reverse leakage current capability
• Wide operating temperature range from -55°C to +125°C
• Suitable for high speed circuits
• Low thermal runaway
• High maximum die temperature: +150°C

Application Field

SMF48A-M3-18 is mainly intended as protection circuits for portable electronic devices, communication equipment, industrial controllers, PCMCIA/CF cards, network interface cards, DSL modems, motherboards, hard disk drives, AC and DC power lines, automobiles, etc.

Working Principle

TVS diodes (also known as transient voltage suppressors) are semiconductor devices used to protect other components and wiring from transient electrical surges (also known as ESD, or electrostatic discharge). TVS diodes have two terminals, an anode (positive) and a cathode (negative). These terminals are connected to the component or wiring to be protected. When a transient surge occurs, the voltage across the diode is increased, and the device quickly conducts current. This conducts the surge away from the protected device or wiring.

SMF48A-M3-18 is a surge protection device that is specifically designed to protect highly sensitive electronics from high voltage spikes caused by lightning strikes and other sources of electrical interference. The device has an anode and cathode, each of which is connected to a protected device or circuit. When a surge voltage passes through the device, the diode rapidly conducts the current away from the sensitive electronics, thus protecting it from potential damage.

Conclusion

SMF48A-M3-18 is a highly advanced TVS diode that offers superior protection from electrical surges and interference. Its rugged construction and wide temperature range make it ideal for use in a variety of industrial and consumer applications. By conducting current away from protected devices and wiring, SMF48A-M3-18 effectively eliminates the risk of equipment damage caused by transient electrical surges.