P4KA18HE3/73

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TVS diodes provide protection against transient voltage levels in a variety of electrical systems. The P4KA18HE3/73 is a popular choice among TVS diodes as it provides effective, reliable and low-cost transient voltage protection. This versatile device is widely used in a number of applications, such as AC/DC switching applications and sensing circuits.

The P4KA18HE3/73 offers a low clamping voltage of 9V, making it ideal for protecting low voltage circuit components from transient voltage events. In addition, the device can handle peak pulse power levels of 19.2A (at 8/20μs circuit). With this device, low capacitance, low power, and fast response time are ensured, allowing circuits to remain stable and operational in challenging electrical conditions.

The P4KA18HE3/73 device achieves fast response times while also providing excellent thermal performance, making it ideal for applications that require fast and reliable response to transients. The device also incorporates low parasitic capacitance and metal oxide varistors for high current surge protection. As a result, it is widely used in AC/DC switching applications and sensing circuits, allowing for reliable and efficient protection against transient voltage.

In terms of working principle, the P4KA18HE3/73 is designed to clamp the voltage at a certain level and absorb high transient spike energy to protect sensitive circuits from destruction. The device includes a Zener diode and a metal oxide varistor (MOV), which have the ability to handle high surge power and clamp transients. The MOV acts as a limiter to absorb transient voltages and divert the excess current from the circuit to ground. The Zener diode is used to limit the voltage to the specified clamp value, while the combined effect of the MOV and Zener diode allows the transient voltage to be restricted within an acceptable limits.

The device is widely used in a variety of industries and applications, including automotive, aerospace, and medical. Some of the key applications where the P4KA18HE3/73 is used are intelligent high-speed charging systems, powering surge protection bus bars, and surge protection of communication instruments. These applications benefit from the device’s reliable and fast response time, low capacitance, and low power consumption.

The versatility of the P4KA18HE3/73 makes it an ideal choice for numerous applications requiring fast and reliable protection against transient voltage. Its low clamped voltage of 9V ensures effective protection of low voltage circuits, while its low parasitic capacitance and metal oxide varistors provide high current surge protection. Combined with its fast response time and excellent thermal performance, the device is widely used in different applications, such as AC/DC switching applications and sensing circuits.

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