SMBJ220ATR

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TVS-Diodes, or Transient Voltage Suppressors (TVS), are a type of surge protection device (SPD) designed to protect sensitive electronic components from the damaging effects of transients caused by lightning, load switching, and other sources. The SMBJ220A TR is a TVS-Diode designed to protect from transients in a variety of industrial, telecom, and home applications. This article will discuss the application field and working principle of this particular device.

Application Field

The SMBJ220A TR is a versatile device with applications in a variety of fields. It has been designed for use in telecom applications such as subscriber line protection, as well as industrial test equipment, broadcast systems, powering supplies, and home electronics. It is also frequently used in automobile electrical systems.

The SMBJ220A TR is designed to protect from transients in these applications with an IEC 61000-4-2 ESD protection rated for up to 2 kV contact discharge. It also has an IEC 61000-4-4 (surge and impulse wave) protection rated for up to 6.8 kV and 2.5 kA (8/20µs). It can also provide protection from transients with high continuous current, allowing for a continuous operating current of up to 10A at 25°C.

Working Principle

The SMBJ220A TR is designed to protect delicate electronic circuitry from the transient voltages caused by external sources. It is a bi-directional device, meaning that it provides protection from flashes of voltage in both polarities, making it compatible with all common types of power supplies.

The SMBJ220A TR works by acting as a short circuit within nanoseconds of a transient voltage spike. This short-circuiting action limits and redirects the energy away from sensitive circuitry, protecting it from permanent damage. The device is designed to automatically re-open voltage pathways once the spike has passed, allowing it to be reused in the event of multiple spikes.

The SMBJ220A TR is also designed with robust internal construction, meaning that it can continuously absorb high amounts of energy without failure. It is also designed with low-clamping voltage which is optimal for the protection of low power electronics.

Conclusion

The SMBJ220A TR is a TVS-Diode designed to protect from transient voltages in a variety of applications. It is designed to provide protection from transients with high continuous current and IEC 61000-4-2 and 4-4 (surge and impulse wave) protection rated up to 6.8kV and 2.5kA (8/20µs). It is also designed with robust internal construction and low-clamping voltage, making it optimal for the protection of low power electronics.

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