SMLJ22A-Q

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The TVS-Diodes technology plays a vital role in quite a few networking equipments, since it ensures that surges and spikes don’t interfere with the device’s operations or damage it. The SMLJ22A-Q TVS Diodes is a recent invention in this regard, offering several advantages. This article will discuss the application field and working principle of the SMLJ22A-Q TVS Diodes.

The SMLJ22A-Q TVS Diodes are rated to work at the extremely low 5.0V of Reverse Stand-Off Voltage. This is well below the standard values in the market (6.5V to a much higher 15V). This low voltage requirement is important because it helps with the design of power management and protection systems without being forced to use an excessive auxiliary power supply or an oversized low-dropout regulator.

Furthermore, the SMLJ22A-Q TVS Diodes also features a high surge capability (2.2kW peak pulse power dissipation at 10/1000µs), which allows the device to protect modern high-speed data interface applications as well, including USB 2.0, IEEE 1394b, HDMI/DVI, SAS and SATA. The clamping voltage offered by the device is quite low at 23.0V, and this helps in dissipating energy quickly and efficiently.

The TVS Diodes are commonly used in applications like the telecommunications, computer & peripherals, office automation and all other consumer electronic products. As mentioned before, they serve the important function of protecting the device from power surges and spikes. They will protect the device up to a certain current level, following which the excess current will be diverted to a Ground via the TVS Diode.

The working principle of the SMLJ22A-Q TVS Diodes is relatively simple. When circuit uses a positive voltage (Vcc) to ground connection, the voltage across the TVS Diode will increase linearly as the current passes through it. However, once the device reaches its breakdown voltage, the current starts to increase rapidly, nearly instantaneously. This is known as the clamping voltage and it serves the important purpose of diverting the excess current from the vital components to the Ground connection. This saves the device from being damaged by the surge.

In conclusion, the SMLJ22A-Q TVS Diodes are modern devices that not only offer extremely low Reverse Stand-Off Voltage of 5.0V, but also a high surge capability of 2.2kW peak pulse power dissipation at 10/1000µs and a low clamping voltage at 23.0V. These features, together with the simple working principle, make it an ideal for protecting various types of communication and consumer electronic products against power surges and spikes.

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