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D3V3F8U9LP3810-7 application field and working principle

TVS diode is a kind of transient voltage suppression diode often used in the protection of high-speed digital circuits, It can provide protection to electronic equipment against over-voltage transient, lightning surge and electrostatic discharge, and play a role of suppressing over-voltage transient.

Features of D3V3F8U9LP3810-7

The D3V3F8U9LP3810-7 is a very popular type of TVS diode for various applications. It\'s RoHS complaint and has far lower capacitance than any other doide of its kind. It is very fast at reacting and can also provide superior clamping performance. The diode offers an extremely low dynamic resistance which ensures that the clamping voltage remains low even during multiple voltage or current surges.

Application

D3V3F8U9LP3810-7 is widely used in the fields of digital/data line protection, industrial control, automotive electronics and telecommunication industry. Its applications also include power supplies, digital/data line protection (RS232, RS485, IEEE1394, 1553 bus Standard, DVI, HDMI), automotive electronics, instrumentation, EMI/RFI filtering, Keyboard/Mouse Protection And System and I/O Port Protection.

Working Principle

The working principle of D3V3F8U9LP3810-7 is based on the principle of P-N junction. It consists of a N-type semiconductor and a P-type semiconductor, forming a diode structure. When a transient surge is applied to the Cathode of the D3V3F8U9LP3810-7, a electric field(E-field) is formed which forces the free electrons to move forward and accumulate at the junction between the P and N type semiconductors and leads to the increase of current. The increased current creates a magnetic field (H-field) that is perpendicular to the E-field and is proportional to the current. This induced magnetic field will eventually form a conducting path and short circuit the Cathode and the Anode of the diode, thus suppressing the over-voltage transient.

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