3KP75A-B

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TVS-Diodes are commonly used as protection devices for high voltage and high current applications, often in the field of power electronics. The 3KP75A-B is a variant of the TVS-Diodes family that is specially designed for transients protection, in both DC and AC power supply lines.

The 3KP75A-B is a three-terminal semiconductor component with a breakdown voltage rating of 75V and a low on-state and leakage current. It is designed to handle repetitive surges up to 8000A and peak pulse currents up to 25000A (10/1000µs waveform). The device is rated for temperature ranges from -40 to 125°C and is not dependent on an external clamping voltage.

In operation, the 3KP75A-B behaves like a normal Zener diode, however it also features suppression circuitry which allows it to dissipate energy from ESD or other surge events quickly and efficiently. This is done by offering an effective path for transient currents to flow through, thereby protecting connected components.

The 3KP75A-B is an ideal choice for applications that require reliable protection against power surges and ESD. It is commonly used in automotive electronics, power supplies, portable electronics, lighting systems and communication equipment. In addition to offering strong protection from electrical transients, the 3KP75A-B offers excellent surge handling capabilities, low forward and reverse leakage and the ability to withstand multiple strikes without compromising performance.

The working principle of the 3KP75A-B is fairly simple. When a surge or transient event occurs, the diode begins to conduct current and dissipate the excess energy. The two electrodes of the 3KP75A-B are linked to the anode and cathode and the middle electrode is connected to a built-in resistor or zener diode. This combination ensures that the excess current is safely dissipated without the need for an external clamping voltage. The diode is also designed to be self-activating, meaning it will automatically re-activate when the surge event has subsided.

Overall, the 3KP75A-B is a reliable and robust component for transients protection in both DC and AC power lines. It offers superior surge and ESD protection, excellent operational stability and a low on-state and leakage current. The device is also designed for a wide operating temperature range and can operate normally even after multiple surge events. Therefore, it is a great choice for applications where reliable, long-term protection against electrical transients is required.

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