SMBJ130C

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The SMBJ130C TVS is a unidirectional, low-capacitance diode. It is a voltage-dependent, monolithic, 2- or 3-terminal device used for protection against overvoltages, transients, and electrostatic discharges. The SMBJ130C is designed for applications in which minimal interaction with the higher speed signal is required. The device operates in a similar manner to a regular clamping diode, but its currents are limited and controlled by its internal structure. This makes it ideal for high-speed applications, such as in automotive electronics, networking, telecommunications, and power electronics.

The SMBJ130C is constructed of two serially connected junctions to minimize capacitance. The junction between the drain and source is optimized to allow higher breakdown voltages while maintaining fast response times. The forward voltage drop across the junction is very low, allowing it to be used in applications with low power supply voltages. The SMBJ130C also has high peak pulse current ratings for better transient protection and very low junction capacitance which allows it to be used in higher speed applications without affecting signal integrity.

The most common application for the SMBJ130C is in protecting I/O ports, such as USB, RS-232, Ethernet, and ISA/PCI from damage caused by electrostatic discharges and voltage transients. The SMBJ130C can also be used as an ESD protection diode in data communication systems and other high-speed applications. Additionally, the SMBJ130C can be used in high power DC/DC converters and switching power supplies to protect against overvoltage and power-on reset transients.

The SMBJ130C works by clamping transients and voltage surges to a maximum voltage level, allowing signal transmission and data integrity to remain unaffected. When an ESD event or transient voltage spike is applied, the diode conducts current while clamping the voltage. Once the transient voltage has passed, the diode turns off and returns to its normal state. This allows the device to utilize its peak pulse current ratings to divert current away from the signal line, while providing the necessary surge protection.

The SMBJ130C is available in two voltage ratings - 130V and 150V - and three package sizes, depending on the application requirements. It is also available with an optional surge damper element, which allows the device to absorb peak pulse currents up to 1500A. The SMBJ130C has an operating temperature range of -55°C to 125°C and is offered in a variety of surface mount packages.

The SMBJ130C is a versatile device offering excellent ESD and transient protection performance for both low and high speed applications. Its low capacitance and high peak pulse current ratings make it an ideal choice for a wide variety of applications, such as automotive electronics, network and telecommunications, power electronics, and many more.

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