SMPZ3931B-M3/85A

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The SMPZ3931B-M3/85A is a single Zener diode, mainly used for clamping, cushioning and electrical transient suppression. It features long standoff voltage range, low capacitance and low dynamic impedance.

The SMPZ3931B-M3/85A is a 0.02W Zener diode with a standoff voltage range of 9.4 - 11.4V, a reverse leakage current of less than 0.1µA, a DC breakdown voltage of 10.7V, a capacitance of 0.5pF, and a dynamic impedance of 9Ω at 10mA.

The SMPZ3931B-M3/85A is mainly used for clamping, cushioning and electrical transient suppression. It can be used in applications such as overvoltage protection, voltage clamping and filtering in circuit designs. It can also be used for polarity protection, pulse generation, ESD suppression and spike suppression.

The SMPZ3931B-M3/85A works by using a Zener junction between a P-type and N-type materials to allow a reverse current flow. This reverse current is proportional to the voltage and is limited by a reverse breakdown voltage. The breakdown voltage is determined by the material properties of the materials and is determined by the doping concentration of the materials. The breakdown voltage of the SMPZ3931B-M3/85A is set to 10.7V with an operating temperature range of -55 to +125°C.

When dealing with high voltages, the SMPZ3931B-M3/85A is capable of safely limiting the voltage and protecting the device from damage due to voltage overshoots. This protection is provided by the dynamic impedance of the device, which is low enough to dissipate the energy dissipated during an electrical surge or spike. The SMPZ3931B-M3/85A also provides protection against transients by limiting the voltage by its standoff voltage range.

The SMPZ3931B-M3/85A is also capable of providing noise filtering by blocking frequencies above the device\'s self-capacitance. This is accomplished by the 0.5pF self-capacitance which helps the device to block unwanted high frequency signals from passing through the circuit. This makes the device ideal for use in noise suppression applications.

In conclusion, the SMPZ3931B-M3/85A is a versatile single Zener diode with a long standoff voltage range, low capacitance and low dynamic impedance. It is ideal for applications such as overvoltage protection, voltage clamping and filtering, polarity protection, pulse generation, ESD suppression and spike suppression. It also provides good noise filtering capabilities, making it an ideal choice for applications in which noise suppression and protection are required.

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