SMF22A1T1G

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TVS - Diodes

Transient Voltage Suppressors (TVS) are a special type of diode that has been designed with very low capacitance and resistance that can be used to quickly and effectively protect electronic devices from an unexpected surge or spike in voltage. The SMF22A1T1G has been designed specifically for use in consumer electronics and other high-performance applications.

SMF22A1T1G Application Field

SMF22A1T1G features include low capacitance and resistance, high surge current handling capabilities, wide temperature range and high impedance under normal operating conditions. It can be used for various applications such as protection of microprocessors, ADCs, DACs, controllers, and other sensitive devices in consumer electronics such as laptops, mobile phones, digital cameras, digital TVs and etc. It also suitable for use in automotive, military, aerospace and medical applications.

Working Principle

TVS diodes are basically ordinary diodes – when the positive current hits the anode, it gets attracted to the cathode and flows there generating a negative current, in the opposite direction. This creates a “clamp” effect, which limits the current that is allowed to flow through the diode and overvoltage or overcurrent will effectively be prevented.

When the circuit using SMF22A1T1G is exposed to voltage spikes since it can withstand up to 22A surge current, it will not be damaged whereas other components may fail. The SMF22A1T1G can also absorb transient pulses with an amplitude of up to 6.5V and it will quickly recover to within 10nS after the pulse has passed.

Conclusion

The SMF22A1T1G is an ideal choice for providing protection to devices which may be exposed to sudden voltage or current spikes and these devices are not only used in consumer electronics but also in various application fields. It features low capacitance and resistance, high surge current protection, wide temperature range, and high impedance under normal operating conditions. The SMF22A1T1G can quickly absorb the pulse, clamping the voltage, while allowing normal current to flow, and quickly recover after the pulse has passed.

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