15KP40C

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TVS – Diodes refers to the use of Transient Voltage Suppression Diodes in protecting high sensitive electrical equipments from being damaged by over voltage spikes and transient events. The 15KP40C is a popular choice in this field. It is a bi-directional uni-polar device which is designed to protect five different voltages, from 5V to 40V. Initially released by Littelfuse in early 2006, it has become a popular choice in providing protection for sensitive instruments. Here we will take a closer look at its application field and working principle.

The 15KP40C is mainly used in EMI/RFI applications. It is a popular choice for groups wanting to maintain high power quality standards. The advantages of using this device come from its low capacitance, low clamping voltage, and fast response. With a capacitance of 9.3pF and a 5V to 40V break down voltage, it is ideal for applications needing to maintain power quality standards. Its fast response time of 1.5ns ensures reliable protection from transient overvoltages. The 15KP40C is also engineered to maintain reliable performance under high frequency noise. With a current rating of 11A, it is perfect for applications that needs a high current flow.

The working principle of the 15KP40C is simple. When the voltage across the diode exceeds the defined breakdown voltage, a low conductance path is created conducting from anode to cathode. A combination of junction capacitance and ohmic resistance dissipates the charge. When the voltage is within the lows, the resistance will recover to a level where it can no longer conduct current. By doing so, the diode is able to intercept and absorb the overvoltage, instead of the equipment being damaged.

In conclusion the 15KP40C is one of the most popular TVS – Diodes in the industry today. With its low capacitance, low clamping voltage, and fast response, it makes the perfect choice for applications including EMI/RFI applications, and high power quality standards. Its working principle is relatively simple - when the voltage acrossthe diode exceeds the defined breakdown voltage, it creates a low conductance path conducting from anode to cathode and dissipates the charge. By doing so, the diode can intercept and absorb the overvoltage before it can damage the equipment. All in all, the 15KP40C makes an excellent choice in its field.

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