SMF14A

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A Transient Voltage Suppressor (TVS) is a semiconductor device built for protection against voltage transients. It acts as a protection diode against transient spikes and protects the sensitive electronic components from over-voltage events such as lightning or voltage surges in power lines. It is a type of diode that is used to protect the sensitive electronic components from voltage surges above the MAX or Even failure voltage rating of the device. They can absorb the extra voltages and disperse the energy so that the device won’t get damaged.

The SMF14A series diode manufactured by STMicroelectronics have been designed to provide protection against ESD, EFT, and lightning transients. SMF14A has a breakdown voltage between 14 and 24V and a maximum stand-off voltage of 10V. The device is ESD protected and also offers transient protection against spikes up to 1.5 kV.

SMF14A devices are designed to protect electronic systems, such as LCD, LNB, DVD players, and TVs, against high ESD events and lightning transients. It has a wide operating temperature range from -40°C to 85°C and is rated for repetitive peak pulse currents of up to 0.5A.

The working principle of a TVS diode is quite simple: the diode is triggered when the voltage across its structure exceeds the specified breakdown voltage. When the transient over-voltage exceeds the specified maximum breakdown voltage, the diode starts to conduct, momentarily. That is, it acts like a short-circuit. This prevents the over-voltage from reaching the sensitive components and dissipates the excess energy.

To ensure the highest possible level of protection, SMF14A TVS Diodes feature two different operating kinds of functions: the unidirectional and the bidirectional. The unidirectional protection feature provided by the diode provides protection against the transient voltages in one direction while the bidirectional protection feature provides protection against transient voltages from both the directions. Thus, the SMF14A TVS Diodes offer the highest level of protection against the external voltages and shocks.

In conclusion, the SMF14A TVS Diodes are perfect solutions for providing protection from transient over-voltages, ESD, and lightning transients. With a wide operating temperature range and the ability to handle up to 1.5kV spikes, these devices are ideal for protecting sensitive electronic components. The unidirectional and bidirectional protection features offered by the diode make it a perfect choice for protecting against all kinds of external over-voltage conditions.

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