DT1240A-04LP-7 Circuit Protection

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TVS (transient voltage suppressor) diodes are key components in many electrical applications. They are typically used to protect sensitive electronic components from destructive electrical overvoltage transients. The DT1240A-04LP-7, a unidirectional, bidirectional, or dual unidirectional TVS diode, is fundamentally composed of a diode die and a flange, and is widely used in various electronic systems.

The DT1240A-04LP-7 is primarily used in applications as a protective device in cellular phone chargers, electronic equipment, circuit board telecommunication systems, automotive systems, AC/DC converters, and green energy equipment. It is also used in other scenarios where electromagnetic interference (EMI) and overvoltage protection is needed.

The DT1240A-04LP-7 is available in several packages, including the 3-pin SMA, 4-pin long side-soldered package, 4-pin MSOP side-welded package, 5-pin SOT323 side-welded package, and 5-pin SOT343 side-welded package.

The DT1240A-04LP-7 has an ultra-low voltage breakdown of 12V, and a maximum clamping voltage of 17V and a maximum dissipated power of 370mW. It is designed to absorb repetitive, high energy pulses of up to 370A and a peak pulse current of 9. until the DC voltage rating is reached. Its low clamping voltage and high peak pulse current ability make it an ideal choice for system protection.

The working principle of DT1240A-04LP-7 relies on its diode junction that has a steep voltage-current characteristic. It acts as an energy barrier by clamping the voltage across its terminals to a predefined value and dissipating the energy of the transient current. When a high positive or negative voltage appears at the device’s terminals, the diode junction immediately begins to conduct current, preventing damage to internal components. Once the transient voltage passes, the diode junction ceases conducting current and the voltage across it returns to a safe level.

In addition to its protection capabilities, the DT1240A-04LP-7 also has fire and over-temperature protection capabilities, which guarantees user safety. It is also highly reliable, with a maximum failure rate of 0.1% per 1000 hours.

The DT1240A-04LP-7 is a reliable and efficient TVS diode that offers interference and overvoltage protection in a variety of applications. It is easy to install and use, and provides reliable protection against transient overvoltage pulses. Its low forward voltage drop and low clamping voltage make it an ideal choice for system protection.

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