SMBJ350A

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The SMBJ350A TVS diode is a state-of-the-art surface mount device used to protect electronic circuitry from transient voltage events such as electrostatic discharge (ESD), cable discharge events (CDE), and electrical fast transients (EFT). Its robust design and capacity to handle more than 3.5kW of surge energy makes it an ideal choice for a variety of industrial, automotive, and consumer applications where low capacitance and low leakage is desired.

In order to shield electronics from transients, a Unidirectional TVS diode clamps the voltage applied to a circuit. This is accomplished by placing a TVS diode between two closely spaced terminals, which allows current to flow in one direction (anode to cathode) and blocks current from flowing in the opposite direction. This arrangement allows for an optimal amount of voltage to pass through to the circuit while still providing protection from electrical surges. The SMBJ350A has an excellent clamping ratio of 37.6, making it highly effective in limiting surge transients.

In addition to its impressive surge energy rating, the SMBJ350A offers various other benefits. Its ultra-low capacitance ensures minimal signal degradation, while the built-in ESD diodes protect the device from electrostatic discharge. The device is also RoHS compliant, making it a safe and reliable choice for environmentally conscious designs. Furthermore, its lead-free design allows for fast assembly of SMT or through-hole mounting.

The SMBJ350A has a wide range of applications, from automotive wiring harnesses and battery packs, to computers and home appliances. For industrial applications, it can be used in power supplies, AC/DC lighting systems, UPS systems, and switchgear. And, with its superior surge protection and low capacitance, it’s an excellent choice for cellular phones, game consoles, and other handheld devices.

The SMBJ350A operates as a reverse-poled, unidirectional device; meaning that when the anode is more positive than the cathode, the diode conducts current and will absorb any surge events. As the current passes through the device, the voltage within the device increases and eventually reaches its clamping voltage, which is defined as the peak voltage the device will sustain. In the event of a voltage spike, the voltage will be clamped at its peak defined value.

In summary, the SMBJ350A is a high-performance surface mount TVS diode offering effective protection for low-capacitance industrial, automotive, and consumer applications. Its high surge ratings and low capacitance make it an ideal choice for a variety of applications that require superior ESD, EFT, and CDE protection. The device is also RoHS compliant and constructed with a lead-free, highly reliable design.

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