1SMC22A TR13

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TVS - Diodes: 1SMC22A TR13 Application Field and Working Principle

The 1SMC22A TR13 transient voltage suppressor (TVS) diode is a unipolar device designed to protect equipment from electrical transients, such as electrostatic discharges (ESD). It is capable of handling pulse surge currents up to 22.5A (8.3 µs waveform) and voltages up to 13V. This makes it suitable for use in several applications, such as computer hardware, consumer electronics, computer peripherals, automotive, medical, and industrial applications.

When the voltage is below breakdown voltage, the diode is an open circuit and no current flows. However, when the voltage exceeds the breakdown voltage (clamping voltage) the diode becomes an almost short-circuit and current will flow. As the voltage increases, the current through the diode increases exponentially until it reaches a limiting value. As the peak voltage and current increases, the hairpin ends of the diode begin to avalanche. This limits the current through the diode to a much lower value. The 1SMC22A TR13 diode is designed so that the avalanche breakdown occurs at a voltage 13V.

A low clamping voltage is necessary in order to protect delicate electronic components from stray voltage. The 1SMC22A TR13 diode\'s low clamping voltage of 13V allows it to protect components from damage due to ESD, power surges, over-voltage, and load dump. It can also be used in battery-backed systems as a safeguard against reverse voltage and reverse polarity.

The 1SMC22A TR13 diode is designed to dissipate surge current in a relatively short period of time. It achieves this by using a small internal capacitor in series with a metal-oxide-semiconductor field-effect transistor. The capacitor helps to reduce the rise time of the surge current. The FET also helps to limit the surge current by acting as a switch that quickly turns off when the voltage exceeds the breakdown voltage. This ensures that only the surge current passes through the diode and not the continuous current. The small internal capacitor and FET also helps to greatly reduce power dissipation due to surge current.

The 1SMC22A TR13 diode can be used in many different applications depending on the required surge current and breakdown voltage. It is ideal for use in computer hardware, consumer electronics, computer peripherals, automotive, medical, and industrial applications. This diode is also commonly used to protect against lightning in areas that are prone to lightning strikes. It is also used to protect against electrical surges due to power outages or power fluctuations.

The 1SMC22A TR13 diode is a reliable and cost effective device that is a must-have in any electronic system. It’s low clamping voltage, high surge current, and fast response time make it the ideal choice for protecting electronic components from electrical transients. The 1SMC22A TR13 is thus an essential component of any electronics system that needs protection from power surges, ESD, over-voltage, and load dump.

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