SMLJ16CA-QH

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TVS – Diodes, or Transient Voltage Suppression Diodes, are specialized diodes or semiconductors which act as switches, helping to protect electronics from voltage surges and spikes. In the application field of the SMLJ16CA-QH, a TVS diode can help to protect small handheld electronic devices from power surges as well as protecting the user from electric shock.

The working principle of a TVS diode can be split into three components: voltage breakdown, clamping and over-current protection. Firstly, the diode has a certain breakdown voltage known as the clamping voltage. This voltage is the point at which the diode begins conducting and diverting current away from the equipment. The voltage then clampers to the diode’s peak or maximum rated voltage, which is determined by its construction. As the voltage rises, the diode is able to clamp the voltage, limiting the voltage with the protected equipment to just above the clamping voltage.

The amount of current conducted can also be controlled by the TVS diode. When surge current is larger than the diode’s maximum peak current, current flow will be limited and the current passing through the protected equipment will be reduced. Therefore, if the current exceeds the SMLJ16CA-QH’s maximum peak current, the diode will divert the current away from the equipment.

Lastly, the TVS diode helps to protect the equipment from overvoltage as well. When the amount of current flowing through the diode is greater than its rated current, the diode will break down and conduct the current away from the protected equipment. This overvoltage protection helps to protect the equipment from power surges and other overvoltage events.

In conclusion, the SMLJ16CA-QH application field and working principle demonstrates how the TVS diode is an essential component in helping to protect handheld electronic devices from power surges and spikes. The diode’s three principle components work together to protect the protected equipment from overvoltage, clamp the voltage to a safe level and divert excessive current away from the device. By understanding the basics of a TVS diode, engineers and technicians will be better equipped to choose the right type and model of diode suitable for their applications.

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