UPT15R/TR7

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TVS diodes, also known as Transient Voltage Suppressors, are an essential tool used in protecting circuit boards from high-voltage surges. As its name suggests, they essentially limit the transient voltage and hence surge voltages to a level that will not damage the circuit. The UPT15R/TR7 is one such diode, and one that has proven effective and reliable in a variety of applications.

The UPT15R/TR7 is a unidirectional diode, meaning it can only pass voltage in one direction. This characteristic makes it ideal for working with AC signals, as it can prevent a high AC voltage from traveling back into a circuit. It also is able to handle high peak, low average power demands for added security against voltage surges. The diode is offered in three different variants; the UPT15R, UPT15T, and TR7.

The UPT15R is a three-terminal version of the UPT15T/TR7, meaning it provides an added level of protection for AC signals. It is designed to protect circuits from transients in the range of 5V to 15V, and in surge currents of up to 1500A. The breakdown voltage rating is between 14V and 15V, with a capacitance of 5pf.

The UPT15T variant is designed to work with AC signals from 0V to 15V and offers a breakdown voltage rating between 10V and 12V, with a capacitance of 3pF. The TR7 is the lowest-cost variant and offers the highest energy capability. It has a breakdown voltage of 8V and can handle up to 1500A surge current. Its capacitance is rated at 2pF. All of the variants come in an SOT-23 and an SMA package.

The UPT15R/TR7’s working principle is relatively simple. When the voltage on one of its terminals reaches its breakdown voltage, the diode conducts current, acting as a short circuit and limiting the voltage to its breakdown level. The diode automatically restores after a few nanoseconds, and then the voltage returns to its normal level.

The UPT15R/TR7 is designed to protect a variety of sensitive components from voltage surges in applications across a wide range of industries. It is commonly used in the automotive industry, as well as in home and industrial automation, medical device, battery protection, and telecommunications. It can be used in on/off switches, power supplies, circuit breakers, and other similar electrical applications.

In conclusion, the UPT15R/TR7 is a reliable and effective unidirectional diode designed to protect sensitive components from voltage surges. It offers three variants, each with its own range of breakdown voltage, surge current, and capacitance, enabling it to meet a variety of needs. Its working principle, though simple, is effective in limiting transient voltage and protecting the circuit from surges. As such, it is a popular choice for many industries, including automotive, home and industrial automation, medical device, battery protection, and telecommunications.

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