SMLJ78A

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TVS-Diodes, also known as Transient Voltage Suppressors, are components that provide protection for circuitry connected to electrical power lines against electrical overvoltage transients and surges. The SMLJ78A is a standard surface-mount, Transient Voltage Suppressor, also called a TVS or Zener diode. It is designed to protect circuit board components from the damaging effects of over-voltage transients and surges.

The SMLJ78A is mainly designed for protecting sensitive circuits from the damaging effects of over-voltage transients and surges. It offers superior protection against current spikes up to 1500 watts for short duration. The component can be easily mounted on a PCB with its surface-mounted package and has proven to be highly effective for circuit protection in applications such as power-line communication, interface protection, LCD displays, signal line protection, and various industrial control systems.

The SMLJ78A has a wide variety of working principles depending on the application and environment. It is made with advanced patented technologies such as Zener diode, avalanche diode, and other semiconductor technologies. When an over-voltage pulse is applied to the device, it enters into forward-bias mode, producing an avalanche breakdown, which then protects the circuit from the over-voltage conditions. The SMLJ78A also has a series-protection of a breakdown voltage (BV) to further protect from higher voltages. This series-protection ensures that the active elements of the device remain within a safe operating voltage range.

The SMLJ78A is used for protecting circuit board components in a variety of desirable applications. Unlike other TVS\'s, it plays a critical role in lightning protection, relying on an advanced combination of shore-clamping, surface mount technology, and an extra low breakdown voltage. This transducer offers excellent ESD protection from massive current spikes, particularly in high-voltage applications. SMLJ-78A has applications in various customer and industrial electronics like LCD displays, multilayer circuit boards, digital ICs, low-power and high-speed logic circuits, mobile phones, digital video cameras, road traffic control systems, and other electro-motive applications.

The SMLJ78A has a wide range of advantages such as lightning and surge protection, low capacitance, excellent ESD protection, low voltage drop, and low leakage current. It is designed to be highly reliable and ideal for use in mission-critical applications that need a high level of protection. In addition, the device has a low on-state resistance and is very low in cost, making it an easy and cost-effective solution to protect against over-voltage surges. Moreover, this device has a UL approval rating and is RoHS and REACH compliant.

In conclusion, the SMLJ78A is a highly reliable, low cost, and efficient Transient Voltage Suppressor designed for circuit board components protection against over-voltage transients and surges. Its wide variety of working principles, low cost, and UL approval rating make it an ideal solution for various customer and industrial applications such as LCD displays, power-line communication, low-power and high-speed logic circuits, and mobile phones.

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