SMF85AT1G

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TVS (Transient Voltage Suppressor) diodes are a type of semiconductor device that works to protect circuits from voltage surges. The SMF85AT1G is one such device, with rated breakover and clamping voltages of 5.98V and 13.0V, respectively. This small, low-power TVS diode is ideal for applications such as microprocessor and logic circuits, telecommunications, consumer electronics and data lines.

In its simplest form, TVS diodes operate as bidirectional voltage-protecting devices. A TVS diode will automatically conduct when it senses a voltage surge, and will immediately reduce the current back to its normal levels. This immediate reaction prevents the circuit board and its components from becoming damaged and inoperative due to transient electrical events. TVS diodes are different from regular zener diodes because they can handle much higher voltage surges with greater power and accuracy.

The SMF85AT1G provides good nonlinear response in both uni and bi-directional modes. The device peak pulse current (IPP) is 6A @ 10/1000 microseconds waveform, while the holding current (IH) is 10mA at a 10% droop. The maximum capacitance is 1pF at VRWM (Rated Working Voltage). The TVS diode has an ultra-fast turn-on time of less than 50ns.

The SMF85AT1G can be used in multiple applications, including computer ports, I/O lines, power supplies, data lines, modem and printer ports, and audio applications. It is an ideal choice for the protection of small electronic circuit boards and components against voltage surges, electrical noise, and other transient voltage threats.

The working principle of the SMF85AT1G is quite simple. In the absence of an overvoltage, the diode appears to be an open circuit in both forward and reverse directions. When an overvoltage is present, the TVS diode becomes forward biased and begins to conduct current. This will then act to limit the voltage on the circuit, returning it back to its normal levels.

The SMF85AT1G is an ideal choice for both surge protection and power supply applications where a low capacitance and high current bipolar TVS diode is required. It’s small size and low power requirements make it an efficient and cost-effective choice for modern, low-voltage electrical and electronic circuit designs.

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