1PMT12AT3G

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TVS or Transient-Voltage-Suppressor Diodes are specially designed electrical components typically used for safeguarding devices against electrical over voltage, such as electrostatic discharges and transient voltage disturbances. The 1PMT12AT3G is a unidirectional voltage clamped surge component produced by TT Electronics AB in Sweden. It is a popular choice for use in a range of applications, such as automotive, communication systems, power distribution systems, and various industrial applications.

The 1PMT12AT3G is a surface mount, SOD-323 package and unidirectional voltage clamped TVS diode. It is designed to support peak pulse power of 500 watts for up to 8/20 microsecond waveforms and is able to withstand repetitive peak surge powers up to 11 watts. It features low leakage and a reverse standoff voltage of 12 volts.

An important feature of the 1PMT12AT3G is its low capacitance. This is important in certain applications as it reduces the possibility of interference in communication cable signals. The maximum capacitance is quoted as 2.2pF, which is lower than the quoted capacitance for many similar devices. This low capacitance lends itself to a wide range of applications including high-speed data. The device is able to operate in a wide temperature range of -55 to +150 degrees C, which makes it suitable for many industrial and automotive applications, such as power distribution systems.

The working principle of the 1PMT12AT3G is based on a basic diode concept. When the voltage across the diode reaches its breakdown voltage, it starts to conduct, thereby clamping the voltage to below a certain level. This clamps the voltage and protects the components in the circuit from overvoltage. The diodes are usually used in parallel in combination with other components such as Zener diodes to protect electrical circuits from power surges. This combination of components is known as a Protection Circuit.

The 1PMT12AT3G is a well-established component with a good track record. Due to its combination of low capacitance levels, low leakage, and reverse standoff voltage, it is well suited to a variety of applications. It is particularly suitable for use in automotive, communication systems, and power distribution systems. It is also ideal for applications such as automotive airbag systems or aircraft avionics systems, where it can protect against electrical overvoltage and electrostatic discharge.

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