SMAJ5.0A M2G

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TVS - Diodes

TVS (Transient Voltage Suppressor) diodes are special types of voltage clamping devices used to protect sensitive components and circuits from damaging current and voltage transients. A TVS diode helps to minimize the risk of catastrophic damage to circuitry or components due to electrostatic discharge or electromagnetic interference, and is an integral part of any design in which transient protection is needed.

A TVS diode is basically a protection diode with a special construction that enables it to be used as a voltage clamp, or "air bag" for delicate circuitry. It is designed to be built into a circuit, acting like a regular diode with an integrated Zener diode when the applied voltage is below the Zener voltage.

TVs diodes come in various package styles and sizes, from surface mount to through-hole types. Common types include diode-capacitor devices (MOVs or Varistors) and FIG diodes (silicon avalanche breakdown diodes). The components are typically rated for a particular clamping voltage – usually in the range of 5 to 440 volts – that is the voltage at which the device begins to conduct current.

SMAJ5.0A M2G Application Field and Working Principle

The SMAJ5.0A M2G TVS diode is a unidirectional device designed for use in secondary side circuits (such as in routers and modems), where it helps to protect against the damaging effects of lightning, electrostatic discharge (ESD), and induced lightning. It is also suitable for use in DC/DC converters, as well as on its own as an ESD control device.

The SMAJ5.0A M2G offers 5-V reverse stand-off protection, which is the voltage at which it begins to conduct. At reverse voltages below 5V, the diode behaves like a regular diode, effectively preventing reverse currents from flowing. When the applied voltage reaches or exceeds 5V, the device begins to conduct, forming an "air bag" that absorbs the excess energy and prevents it from reaching more delicate components. The device can handle up to 500W surge pulse power at 8/20μs.

The SMAJ5.0A M2G is an effective device that can be used in any application where transient protection is needed. It is available in a surface mount package, making it suitable for modern designs. Its low capacitance of just 1.3pF also makes it suitable for use in high-speed circuits.

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