SMBJ200

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The SMBJ200 is a thyristor commonly found in applications where voltage protection is required, such as in circuit boards with sensitive components or in medical equipment. The SMBJ200 is a TVS (transient voltage suppressor) diode that can stop high voltage spikes before they reach sensitive circuitry. It has a breakdown voltage of 200V and is non-polarized, making it suitable for a variety of applications.

TVS diodes are used in electronic circuits to absorb sustained power surges and high-voltage transients that could harm sensitive components. They are essentially just a diode that has been designed to conduct current only when a defined voltage level is exceeded. This protects the other components in the circuit from any damage due to power surges and prevents power spikes from propagating through the circuit and causing damage or malfunction of the appliance.

The SMBJ200 has a unidirectional design which means it only allows current to flow in one direction. This is ideal for circuit boards or other electronic components which have components on both sides and therefore need to stop voltage from travelling across the device. The SMBJ200 also has a low clamping voltage which makes it suitable for low voltage circuits. It can absorb up to 400W of power and has a fast response time which is crucial when it comes to protecting sensitive components from spikes.

When it comes to working principles, the SMBJ200 is a very simple device. In its off state, the diode acts like an open switch and no current can flow. When a voltage spike occurs, it acts like a closed switch and the voltage is diverted to the diode, instead of the sensitive circuitry. The diode then absorbs the power, and once the voltage level drops the diode opens again and therefore no power is allowed to travel to the sensitive components.

In summary, the SMBJ200 is a TVS diode that is used to protect sensitive circuit components from high voltage spikes. It has a unidirectional design and a low clamping voltage which makes it suitable for low voltage applications. The fast response time of the SMBJ200 ensures that it can divert the voltage spike before it has a chance to reach the sensitive components, thus protecting them from damage or malfunction.

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