SMBJ3V3-M3/5B

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TVS-diodes, or transient voltage suppressors, are devices designed to protect circuit boards and other sensitive electronic components from overvoltage conditions. The SMBJ3V3-M3/5B is a tri-state TVS diode that is designed to protect both high-speed data lines and power bus lines. The device is able to handle a wide range of working voltages and pulse currents, and is suitable for use in a variety of applications.

The SMBJ3V3-M3/5B has three states – tri-state active, low impedance, and high impedance. In the tri-state active mode, the device functions like a Zener diode and limits the voltage on a given bus or data line. It can handle high voltage transients that can rise up to as much as 5.5V. The low impedance state allows the device to conduct current until the bus voltage reaches a certain point, at which the device switches back to high impedance state. This prevents the high bus voltage from damaging sensitive components.

The device is constructed in a small, surface-mountable SOD-323 package, making it suitable for space-constrained applications. It is designed to have a low capacitance of 0.14pF when operated at 4.5V, which helps to reduce signal losses. It is also capable of dissipating surface mount-style high transient currents up to 11A peak and 23A for 8 μs. This makes it suitable for applications that require high pulse current protection.

The SMBJ3V3-M3/5B is well-suited for many different applications in the electronics industry. It is commonly used in automotive and industrial electronics for protection against overvoltage transients. Its wide working range, low capacitance, and peak current protection make it ideal for applications such as USB and power line protection, data communications protection, and protection of sensitive components on PC boards. In many cases, the device can replace standard Zener diodes for high-speed data line protection.

The SMBJ3V3-M3/5B is a versatile and reliable device that can provide effective protection against overvoltage transients in a variety of applications. Its small size and low capacitance make it an ideal solution for space-constrained applications, while its wide working range and peak current protection make it suitable for a variety of protection tasks. No matter the application, the SMBJ3V3-M3/5B can provide reliable and cost-effective protection against overvoltage transients.

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