3KP40C-B

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TVS - Diodes (also known as transient voltage suppressors) are semiconductors that protect sensitive electronic equipment from transients, such as electrical surges, inductive spikes, or other electrical disturbances. 3KP40C-B is one of the widely used TVS - Diodes. In this article, we will discuss the application fields, working principle, and other aspects of the 3KP40C-B.

The 3KP40C-B is ideal for general-purpose low power requirement applications. It can be used in protection circuits, DC/DC converters, consumer electronics, communication circuits, and other applications where overvoltage protection is required. The device also has a variety of features including low operating power consumption, low capacitance, low stand-off voltage, and fast response time. It also has a UL 94V-0 rated package.

The 3KP40C-B works by shorting high frequency and ESD transients to ground before they reach the protected equipment. It accomplishes this through a sudden, limited reverse current, also known as a “clamping”, which is achieved by the device’s zener diode junction and its parasitic capacitance. The device’s clamping voltage is the voltage at which the device will start clamping; the breakdown voltage is the maximum voltage across the device before it fails.

The 3KP40C-B’s body consists of Silicon, and it is packaged in a 2-pin, SMA type, or SOT-23 surface-mount device. It also has an operational temperature range of -55 degrees C to 125 degrees C. Other features of the 3KP40C-B include a power dissipation capability of up to 2.5 watts, with a maximum rated power of 0.50 watts and an on-resistance of 0.07 ohms.

The 3KP40C-B also has an IEC-61000-4-2 ESD rating of 8 kV (contact discharge), allowing it to be used in even the most sensitive circuit designs. It also has an operating capacitance of 3.7 pF, which means it can provide protection in high risk, high impedance environments. The device also has a surge current rating of 200 amperes, making it suitable for use in applications with high peak currents.

Overall, the 3KP40C-B is a widely popular TVS-diode that can be used in a variety of applications, including consumer electronics, communication circuits, and DC/DC converters. The device’s features make it an ideal choice for low power requirement applications that require surge, ESD, or over-voltage protection.

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