SMBJ48CAHE3/5B

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Transient voltage suppressors (TVS) diodes are one of the most important components used in electronic devices for protection against overvoltage. The SMBJ48CAHE3/5B is a member of this family of components and is one of the most commonly used TVS diodes. In this article, we will take a look at the application field and working principle of this device.

Application field

The SMBJ48CAHE3/5B is used primarily in high-voltage over-voltage protection applications, including automotive electronic circuits, consumer electronic applications, and power supplies. It is used to protect against high voltage transients that can occur due to power surges, ESD (electrostatic discharge), switching transients, etc. The device is also used in various medical and industrial applications such as backlight protection, circuit isolation, and noise suppression.

Working Principle

The SMBJ48CAHE3/5B is an unidirectional, bi-directional or dual-directional TVS diode with a breakdown voltage of 48 ± 4 V. It is designed to protect sensitive low voltage circuits from high voltage transients. When a voltage transient above the specified value is applied across the terminals of the device, the diode will breakdown and start to conduct current. The SMBJ48CAHE3/5B will then start to limit the voltage to its clamping voltage. The limiting of the voltage will start to dissipate the energy and protect the circuit from the damaging surge.

When the surge is over, the device will go back to its original state and prepared to protect the circuit from another surge. It is designed to be used in any orientation and is basically a "plug and play" device – no extra components or settings are required. It is also capable of dissipating high amounts of energy, making it suitable for high power applications.

Conclusion

The SMBJ48CAHE3/5B is a commonly used TVS diode, designed mainly for high-voltage over-voltage protection applications. It is unidirectional, bi-directional or dual-directional, has a breakdown voltage of 48V, and requires no additional components or settings. The device is easy to use and is capable of dissipating high amounts of energy. The SMBJ48CAHE3/5B is a reliable and versatile device that can be used to protect sensitive electronic circuits from high voltage transients.

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