SMDB03C/TR13 Circuit Protection

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Transient Voltage Suppression (TVS) Diode is a type of highly reliable, effectively clamping, bidirectional semi-conductor device. It provides over-voltage protection for sensitive electronic circuits. SMDB03C/TR13 is the industry-standard TVS Diode widely used for the protection of low voltage I/O and data lines. The device is in a convenient, tiny, surface mount SOT-363 package.

Device Overview

The SMDB03C/TR13 is a transient voltage suppression diode specifically designed for trans-orb/MOV applications in cell phones, PDAs, notebook computers, servers, and telecom equipment. It provides excellent clamping performance and effectively low reverse leakage current. The SOT-363 package is smaller than a SOT-323 package, allowing more efficient use of board space.

Working Principle

When subjected to a high voltage transient or a high-energy surge, the SMDB03C/TR13 conducts and, in turn, turns the energy into harmless heat, thereby avoiding system damage. The peak pulse dissipation current determines the maximum energy that device can dissipate, while the peak clamping voltage determines the maximum voltage that can be clamped without permanently altering the device.

Application Field

The SMDB03C/TR13 is most commonly used for short circuit protection in electronic circuits. It can provide a reliable protection against ESD, wiring transients, and lightning surges in automotive, computers, telecom, consumer electronics, renewable energy equipment, medical devices, and power supply systems. With its low capacitance, the SMDB03C/TR13 can effectively clamp low-frequency transients, ensuring protection from high-level surges.

In automotive applications, the SMDB03C/TR13 is used for inductive and capacitive circuit protection, such as in driver, power steering, and airbag circuits. It is also used in ABS systems, power windows, and transmission control suppliers. The device\'s low capacitance helps prevent it from disrupting low-frequency signals, like those used in advanced driver assistance systems (ADAS) like radar and camera systems.

In telecom applications, the SMDB03C/TR13 is used for peak power clamping, ESD, and surge protection for modems, routers, and telecom power systems. It can also be used in data lines for clamped protection along with TVS arrays.

In consumer electronics, the SMDB03C/TR13 is used in voltage adapter modules, power supplies, audio amplifiers, and card readers.

In the industrial sector, the SMDB03C/TR13 can be used for protecting signal or power inputs and outputs, such as in solar power systems or motors for pumps or compressors.

Conclusion

The SMDB03C/TR13 is a conveniently sized transient voltage suppression diode designed to provide protection from ESD, wiring transients, and other power surges. With its low capacitance and excellent clamping performance, it is suitable for a variety of automotive, telecom, industrial, and consumer applications.

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