1SMB70A TR13

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TVS - diodes, also known as surge protection diodes, are semiconductor devices designed to protect sensitive components from surges or transients created by induction or electrostatic discharge. The 1SMB70A TR13 is a unidirectional TVS diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. It helps to suppress diode reverse breakdown by clamping transient voltage, and is designed for a working voltage of 36V, a maximum clamping voltage of 70V, and a leakage current of subject to 10µA.

In terms of its application field, the 1SMB70A TR13 is primarily designed for transient protection in industrial and consumer electronic equipment, including telecom equipment, industrial controls and communication systems. It is well-suited to automotive applications, since it has excellent surge protection capabilities up to 40A (tP=8/20μs) at operating temperatures ranging from -65 to +175°C, and it constantly monitors environmental conditions, ensuring reliable protection against all kinds of electrical transient events. The device particularly excels in protecting circuit lines from electrostatic discharge and transients caused by inductive switching.

In its working principle, the 1SMB70A TR13 results from a structure composed of two back-to-back Zener diodes, providing low clamping voltage and low capacitance values, which allow the device to be used for data lines. Its breakdown voltage is designed to be at the edge of the avalanche region at the standard test conditions, which increases the safety margin for given levels of insulation. During reverse bias, the device enters into avalanche mode, and it provides the required protection against ESD and other transient events. In addition, the device will resume its normal operation after the transient event has been suppressed.

The 1SMB70A TR13 surge protection diode also features low leakage current, which allows it to be used in applications where power consumption can be a critical factor. The device also exhibits minimal capacitance, resulting in practically no signal interference with the protected circuit. This makes it particularly suitable for high-speed signal transmission and high-frequency applications.

In conclusion, the 1SMB70A TR13 is a unidirectional TVS diode designed for transient protection in a wide range of applications. Its features include low clamping voltage, low capacitance, low leakage current, and excellent surge protection capabilities, which allow it to be used in a variety of applications ranging from industrial and consumer electronics to automotive and telecommunication.

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