SJPB-D6VR Discrete Semiconductor Products

Diodes and rectifiers are electronic components usually used to control the direction of electrical current flow. The SJPB-D6VR, also known as a single junction pseudo thyristor, belongs to the single rectifier category. This article will explain the application field and working principle of the SJPB-D6VR.

Application Field of the SJPB-D6VR

The SJPB-D6VR is a specifically designed component for use in high voltage alternating current (AC) power circuits. It is capable of working at voltages up to 6kV and currents up to 200A. Common applications include rectification of AC voltages, switching Converters and Motor Inverters, and controlling the flow of large electrical currents.

The component is also well suited for use in high-temperature environments due to its superior performance in temperatures up to 200°C. As a result, the SJPB-D6VR is commonly found in power applications such as power supplies, welding equipment, high-power semiconductor lasers, and so on.

Working Principle of the SJPB-D6VR

Because it is a controlled rectifier, the SJPB-D6VR uses a triggering system to control the flow of current. It features two main sections. The first is a PN-junction diode section and the second is a thyristor/diode control section.

The PN-junction diode section is the actual rectifier element and it is made of semiconductors that switch on and off with the alternating current. When the current is in the positive half of its cycle, the diode will be in the “on” position, allowing current to flow. When the current is in the negative cycle, however, the diode will be in the “off” position, blocking current flow. This is how the SJPB-D6VR can regulate the flow of alternating current.

The thyristor/diode control section controls the PN-junction diode section. It is composed of a thyristor and two diodes. When a current is passed through the control section, the thyristor is triggered and the diodes allow the current to flow through the PN-junction diode section, turning it “on.” The thyristor remains in the “on” state until the current decreases below a certain level and the thyristor automatically switches off, cutting the current to the PN-junction diode section and turning it “off” again.

The control section also enables the circuit to be “override” controlled. This means that if there is an external control device, such as a microcomputer or logic chip, it can signal the thyristor to remain in the “on” state irrespective of the current level in the power circuit. This makes the SJPB-D6VR an ideal component for high-precision current control applications.

Conclusion

The SJPB-D6VR is a single junction rectifier capable of handling high voltages and currents. Its controlled design also makes it well suited for applications that require highly precise current control. Common applications of the SJPB-D6VR include rectification of AC voltages, switching Converters and Motor Inverters, controlling the flow of large electrical currents, and so on. This article has described the application field and working principle of the SJPB-D6VR.