1.5SMC47A TR13

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A transient voltage suppressor (TVS) diode is an electrical component used in electronic circuits to protect equipment from voltage spikes greater than a specified limit. The 1.5SMC47A TR13 is a type of unidirectional TVS diode that is mainly used to protect electronic components from electrostatic discharge (ESD) and lightning-induced transients. It has a breakdown voltage of 13V for unidirectional, meaning that it can handle a voltage spike which is higher than 13V for a short duration even when it is biased above the PTV.

The 1.5SMC47A TR13 is a low capacitance, low on-state resistance, and low clamping voltage device which works between -55° Celsius and 150° Celsius junction temperature range. Its improved transient performance and improved ESD level assures better immunity against electrostatic discharge. It is also RoHS (Restrictions on Hazardous Substances) compliant. Typical applications of the 1.5SMC47A TR13 TVS diode include:

1. Electronic circuitry and devices in automotive industry, industrial control systems, and medical equipment
2. Surge protection circuitry in telecommunications equipment, computer systems, consumer electronics, and home network systems.
3. Protecting high-power applications such as consumer electronics to ensure safe performance.

The 1.5SMC47A TR13 is a unidirectional TVS diode which stems from the Silicon avalanche zener diode (SAZD) structure. It is designed to clamp the transient voltage to a normal operational level. The metal-oxide semiconductor (MOS), which is part of the device structure, acts as a voltage regulator, allowing current conduction only when the transient voltage exceeds the breakdown rating. When the voltage exceeds the breakdown voltage of the device, an avalanche effect is triggered, allowing the current to be conducted when the device is in forward biased.

When an overvoltage is applied on the 1.5SMC47A TR13, the normal operation of the device is disrupted and it reaches a breakdown voltage. If this is higher than the rated P-N junction breakdown voltage, then the avalanche brings the voltage to the clamping voltage of the device. The clamping of the voltage is a limiting phenomenon of the diode, like the avalanche effect, which is similar to a zener diode breakdown, but is much faster. This operation mode of the device is very useful for providing protection against overvoltages.

The main advantages of 1.5SMC47A TR13 are its low capacitance, low on-state resistance, low clamping voltage, improved transient performance, improved ESD level, and RoHS compliance. This TVS diode is suitable for a range of applications including automotive, industrial control systems, telecommunications, consumer and medical electronics, home networking systems, and high-power applications.

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