C390PB

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Thyristors – SCRs, such as the C390PB, are solid state switching components. The C390PB utilizes bidirectional thyristors with a 1SK121 chip encapsulated in a special casing. This integrated package allows for a wide variety of uses in power control and switch-mode power supply systems.The C390PB features fast turn-on times, low holding current characteristics and low off state leakage current. It has an inverse blocking voltage of 600V with a peak forward current of 30A. The turn-on/turn-off times are measured at 60/80ms, providing short switching times with excellent electrical noise characteristics.Designed for use in single phase, half-wave rectification applications, the C390PB is ideal for controlling the switching and conversion of AC line voltage into DC voltage. By using a suitable power control element, the C390PB is capable of providing voltage and current control and varying the charging speed of battery or capacitor circuits that are used with rectified AC sources.The C390PB is also ideal for controlling switching between phase shifted AC voltages of differing frequencies, or between DC and AC voltages. With its built in surge tolerant circuitry, it is capable of surviving high voltage surges generated during switching without fail.In addition, the C390PB is capable of providing precise power control and switching between AC and DC sources for the implementation of multiple circuit designs. It features very high surge immunity for the application of pulse-width modulation (PWM) power supply designs. It is ideal for controlling the switching of inductive-type components such as transformers, relays, and lamps.The C390PB utilizes an isolated SCR trigger circuit. This circuit rapidly charges up an internal capacitor to the SCR turn-on voltage, switching the SCR into the conducting state. The switch time in this circuit is quite rapid, allowing for high switching frequencies. In addition, the switch time is determined by the capacitor used in the circuit, meaning that it can be tailored to the specific application.Overall, the C390PB is a robust and reliable power switching component. Its wide range of uses, superior surge immunity, and precise power control make it an ideal choice for many single-phase rectification projects. Its fast switch-on times and built-in pulse-width modulation circuitry make it an ideal choice for applications such as automotive electrical system designs and lighting control.

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