B72587H3140S253

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Thyristors (Thyristors, abbreviated as SCR) refer to components which can automatically turn on and remain in on-state after they are triggered once under certain circuit conditions. It is a type of semiconductor component that performs three-stage conduction control in the circuit. It is widely used in circuit protection, power control, UPS power system, motor speed control and other fields. Among them, B72587H3140S253 is one of the most popular and commonly used varieties.

The type number B72587H3140S253 belonging to TVS (Thyristors, Varistors, MOVs) is composed of a number of meaningful parameters to designate an SCR. B72587H3 stands for the series and type number of this thyristor. It is a kind of bidirectional symmetrical thyristor type with evaluation chip size of 7mm×7mm. H3140S253 is the breakdown voltage of this series of thyristor. It corresponds to the breakdown voltage of 5500V. Therefore, the product has a range of 8A-30A and a breakdown voltage range of 5500V.

B72587H3140S253 is mainly used for LED high-power lighting and photovoltaic power components overcurrent protection, motor control, UPS standby power, Thyristor switching and so on. Generally, this kind of thyristor’s application in UPS standby power supply is an important link. In the UPS system, once the power supply is interrupted, the thyristor plays the role of overcurrent protection, switching and control.

The working principle of B72587H3140S253 is closely related to its physical structure. Thyristors are commonly divided into two types according to the size of their off-state blocking voltage, which is divided into low voltage thyristors and high voltage thyristors. The physical structure of the thyristor is represented by a four-layer PNPN structure, consisting of a P-type layer sandwiched between two N-type layers, forming a voltage-resistance combination. When the total anode voltage of the thyristor is greater than the rated blocking voltage, the thyristor can be triggered, i.e., the anode current and anode voltage become equal, and the operations of devices such as amps, relays and contactor can be controlled.

In conclusion, the B72587H3140S253 is a type of TVS (Thyristors, Varistors and MOVs) belonging to the Thyristors series, with a breakdown voltage of 5500V and a common application in circuit protection, power control, UPS standby power supply, motor control and LED high-power lighting. Its working principle largely depends on the physical structure and the magnitude of its off-state blocking voltage.

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