SMLJ78AE3/TR13

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TVS (transient voltage suppression) diodes are useful components in various different types of electronic designs. The SMLJ78AE3/TR13 is a type of TVS diode that provides protection against voltage transients, which can damage sensitive electronics. This article explains the SMLJ78AE3/TR13\'s application field and working principle.

Application Field

The SMLJ78AE3/TR13 TVS diode is designed to protect vulnerable electronic components from excessive voltage transients. It has a maximum peak pulse current of 78 A and a maximum clamping voltage of 13 V, allowing it to absorb and divert high levels of transient voltage. This makes it ideal for use in automotive, computer and industrial environments, as these are all environments where voltage transients are common.

The SMLJ78AE3/TR13 is also suited for cell phones, tablets, sports cameras and other sensitive portable consumer electronics, as these devices are typically ungrounded or connected to low-impedance external loads, making them more vulnerable to voltage transients. The SMLJ78AE3/TR13 can help protect these devices from power surges or lightning strikes.

Working Principle

The working principle of the SMLJ78AE3/TR13 TVS diode is based on the breakdown of a diode\'s junction. When the diode\'s junction is subjected to a high voltage, it becomes conductive and allows current to pass through it. This current is diverted away from the vulnerable component, preventing damage.

The SMLJ78AE3/TR13 is designed to absorb a large amount of energy without experiencing catastrophic failure. This is done by using a special construction that increases the area of its breakdown junction. The large area of the breakdown junction allows it to absorb a lot of energy without failing, while the low impedance of the breakdown junction allows it to dissipate the energy quickly.

The SMLJ78AE3/TR13 is also designed with a fast response time. The diode responds quickly to voltage transients, allowing it to absorb the energy before it can damage the sensitive component. This ensures that the component will not be damaged by the transient voltage.

In conclusion, the SMLJ78AE3/TR13 TVS diode is a useful component for protecting vulnerable components from voltage transients. It has a high maximum peak pulse current and a low clamping voltage, making it ideal for use in automotive, computer and industrial environments. Additionally, it has a large breakdown junction and fast response time, which ensures that it can absorb energy quickly without failing.

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