SMBG45CAHE3/5B

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What is SMBG45CAHE3/5B TVS-Diodes?

SMBG45CAHE3/5B TVS-diodes are three-leaded devices used to protect sensitive electronic equipment from transients and surges. They are made up of a zener diode, a rectifier diode and a metal-oxide varistor (MOV) housed in a surgically sealed package. When a transient voltage spike appears on the line, the SMBG45CAHE3/5B TVS-diode is designed to redirect the damaging current directly to ground and away from the protected part.

What are the Application Fields of SMBG45CAHE3/5B TVS-Diodes?

SMBG45CAHE3/5B TVS-diodes are used for a variety of applications, including:

• Data and signal protection
• Power line protection
• Telephone line protection
• High-speed network connection protection
• Power supply ripple and noise absorption
• Surge suppression

These applications have two main goals:

• Protecting the equipment from any voltage spikes that may damage the system
• Reducing electromagnetic interference

How Does SMBG45CAHE3/5B TVS-Diodes Work?

The SMBG45CAHE3/5B has three main components: the zener diode, the rectifier diode, and the MOV. When the voltage rises to a dangerous level, the zener diode breaks down and causes the rectifier diode to conduct current. This current is then redirected to the MOV, which is a variable resistor. The MOV will then absorb the energy and dissipate it as heat, protecting the system.

SMBG45CAHE3/5B TVS-diodes are designed to be effective against both ESD (electrostatic discharge) and EFT (electrical fast transients) events. Fast transient events occur when a high-voltage surge appears on the line and is directed at the equipment. ESD events occur when static buildup on an object is discharged onto the equipment. Both situations can cause irreparable damage to electronic components.

In addition to protection, SMBG45CAHE3/5B TVS-diodes are also used to reduce RF interference. When the MOV dissipates energy, it creates a path for the energy to escape, reducing the amount of interference generated.

Conclusion

SMBG45CAHE3/5B TVS-diodes are a valuable tool for protecting sensitive electronic equipment from transients, surges, ESD, EFT, and RF interference. They are designed to conduct current in the event of a dangerous voltage spike, absorbing the energy and dissipating it as heat. This helps protect the system from damaging surges and reduces the amount of interference generated.

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