SMDJ16

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TVS - Diodes

The SMDJ16 is a unidirectional surface mount TVS Diode designed to protect application components from transient voltage overshoots caused by load switching or lightning.

1. Application Field

The protection offered by the SMDJ16 allows for its use in a wider range of applications than just voltage and current overshoots. The device is applicable in a variety of applications such as: telecom lines, LAN interfaces, medical equipment, automotive electronics, consumer electronic equipment and data processing equipment. Additionally, the SMDJ16 is useful in audio and video equipment in general, as well as in power supply units, where it can be used to limit overvoltage and the associated possible destruction of the electronics.

2. Typical Working Principle

The working principle of the SMDJ16 is based on its own structure, which consists of two diodes in a back-to-back configuration. The two diodes act together in order to redirect any current flow in the circuit away from the sensitive components in the device. In general, the current flows from the cathode side, which acts as an anode, and the anode side of the diode performs its protective function by providing an escape path for the energy in the form of heat and light.

When the device is exposed to a transient overvoltage, the diodes open up and the voltage is diverted away from the sensitive components, thus preventing them from being damaged. Furthermore, the SMDJ16 is capable of protecting against multiple such overvoltage events without having to be reset.

The SMDJ16 also has several other features, including a low operating voltage, low leakage current, and a low capacitance. These features ensure that the device is not affected by other current sources in the circuit, while at the same time providing protection against transient overvoltages.

In addition, the reverse breakdown voltage of the SMDJ16 is designed to be higher than the expected overvoltage of the application, in order to ensure that the device does not start to conduct prematurely and cause damage to the sensitive components.

Overall, the SMDJ16 is an excellent device for protecting applications from transient voltage and current overshoots. Its low operating voltage, low leakage current, and low capacitance make it ideal for a wide range of applications, while its reverse breakdown voltage ensures that it will not short out any components it is protecting.

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