1.5CE7.5CA TR

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TVS - Diodes: 1.5CE7.5CA TR Application Field and Working Principle

Transient Voltage Suppressor (TVS) diodes, also known as protective diodes, are special-purpose diodes that clamp voltages above a specified threshold in order to protect electronic components from voltage spikes. They do this by diverting the excess voltage away to ground or a specified low-voltage circuit. The 1.5CE7.5CA TR (also known as a Transient Voltage Suppressor Diode) is a device designed specifically for protecting electronic circuits from voltage transients. In this article, we will discuss its application field and working principle.

Application Field:

The 1.5CE7.5CA TR is designed to protect electronic circuits from vertical voltage transients. These transients are usually caused by electrostatic discharge, lightning, or electrical noise in the power supply. The 1.5CE7.5CA TR is designed to clamp these sudden voltage increases and divert the excess voltage away from the sensitive components. This is done by presenting a low impedance path, since the device will essentially short circuit between the supply and the ground as soon as the voltage increases beyond its threshold.

The 1.5CE7.5CA TR has a wide range of applications, including the protection of mobile phones, wireless communication systems, automotive systems, as well as various other electronic systems. The device is also used for the protection of low-voltage circuits, where its low-impedance characteristics provide excellent protection from most voltage transients. It is also a popular choice for surge protection applications, since its fast response time and low device capacitance provide superior performance.

Working Principle:

The 1.5CE7.5CA TR works by essentially shorting the supply to ground once the voltage exceeds its threshold voltage. This occurs because as the voltage increases, it causes the diode to conduct, which creates a path for excess current to be diverted from the supply to ground. Since the impedance of the diode is very low, the voltage remains below the specified threshold, protecting the critical components in the circuit.

The 1.5CE7.5CA TR consists of a PNP bipolar junction transistor (BJT) and a Schottky diode connected in parallel. The BJT is used to provide a low-impedance path for electrons to flow, while the Schottky diode is used to prevent any reverse flow of current. As the supply voltage increases, the BJT initially starts to conduct, and it will eventually reach a point where the voltage across it exceeds its breakdown voltage. At this point, the excess current will be diverted to ground via the diode, thus providing the necessary protection.

The 1.5CE7.5CA TR is designed with a wide range of features and specifications. It has a wide operating temperature range of -55°C (-67°F) to 125°C (257°F), which makes it an ideal choice for automotive, industrial, and consumer applications. It also has a maximum peak pulse current rating of 5000 A and a pulse width of 10,000 μs, thus making it suitable for surge protection. In addition, its low operating capacitance of 0.04 pF makes it an ideal choice for low-capacitance applications.

In conclusion, the 1.5CE7.5CA TR is a specially designed Transient Voltage Suppressor (TVS) diode which can be used for protecting various electronic circuits from voltage transients. Its wide operating temperature range, maximum pulse current rating, and low operating capacitance make it an ideal choice for many applications. By properly implementing it into an electrical circuit, engineers can be sure that their circuits will be able to withstand the rigours of electric transients and keep their systems operating reliably.

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