1.5SMC200A TR13

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Transient Voltage Suppressor (TVS) Diodes are semiconductor devices used for over-voltage and over-current protection in electrical circuits. The 1.5SMC200A TR13 is a type of external and general purpose TVS which offers a low breakdown voltage with good standoff voltage characteristics. This article discusses the application fields and working principle of this device.

Application fields

The 1.5SMC200A TR13 device is widely used in a range of applications for over-voltage protection. Its applications range from industrial, medical and automotive to computing and consumer electronics. It is also suitable for protecting high-speed/high-voltage communication lines, where its high-surge and low-capacitance characteristics provide effective protection against dirt, dust, and vibration. Besides, it is widely used for protecting data and telecommunications systems from over-voltage transients. Furthermore, this device provides reliable protection of automotive computers, sensors and electronic components against harsh environmental conditions such as high-voltage transients, ESD and over-voltage.

Working principle

The 1.5SMC200A TR13 is a diode-transistor device that consists of two active elements: a diode and a transistor. The diode part is made up of a PN-junction, while the transistor is a depletion-mode enhanced N-channel MOSFET. The diode\'s PN junction is designed to break down at a predetermined voltage level, called its Breakdown Voltage (BV). As the over-voltage transient increases and the device\'s BV is exceeded, the diode part of the device conducts, allowing current to flow and thus providing over-voltage protection.

The transistor part of the device is designed to be provided with a constant gate voltage at the specified reverse polarity and a specific breakdown voltage. When an over-voltage transient occurs, the device\'s gate voltage increases, increasing the current through the transistor and thus allowing high-voltage protection. In addition to its basic over-voltage protection function, the 1.5SMC200A TR13 device also provides ESD protection and over-voltage monitoring.

Conclusion

The 1.5SMC200A TR13 device is a TVS diode that is capable of providing effective protection against high-voltage transients, ESD and over-voltage. It is used in various applications including industrial, medical and automotive as well as computer and consumer electronics, telecom, and automotive computers, sensors and electronic components. Its working principle is based on the PN-junction of the diode and the depletion-mode enhanced N-channel MOSFET transistor.

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