2SD24570QL

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Transistors - Bipolar (BJT) – Single are widely used in electronic circuits. The 2SD24570QL is a Darlington single-transistor with two base-emitter junctions and two control terminals. Commonly used in power and commutation circuits, it finds its application in various industries and applications such as power supplies, amplifiers, amplifiers, and linear integrated circuits. This article will discuss the application field and working principle of the 2SD24570QL.

Application field of 2SD24570QL

The 2SD24570QL is a useful device for applications where a high voltage and current amplification is necessary, such as driver circuits and power supplies. It is a general-purpose transistor with a rating of 800mA of collector current at 250V with a maximum Collector Emitter Saturation Voltage(VCE(sat)) of 0.3V at a Collector Current of 800mA. It is manufactured using a Silicon epitaxial planar process for increased temperature and voltage handling capabilities. It is also used in output stages of low-power amplifiers and power supplies, as well as in servo controllers, voltage regulators, regulators, and pulse transformers.

The 2SD24570QL is also used in high-frequency SMPS (Switched Mode Power Supplies), switching regulators, inrush current limiters, digital audio amplifiers, video amplifiers, Class-D audio amplifiers, motor control, light emitting diodes (LEDs) drivers, power conversions, and other applications for current and voltage conversion. It is also used in the inductive-kick applications of TV lifts, massage chairs, and door locks.

Working principle of 2SD24570QL

The 2SD24570QL is a single-transistor with two base-emitter junctions. Each junction is independently biased by two control terminals. It operates in a common-emitter configuration and is designed to operate in the active region (when the collector current is greater than the base current). In this region, the collector-emitter voltage (Vce) is just greater than the base-emitter voltage (Vbe), and the transistor amplifies the current gain.

In the active region, the 2SD24570QL operates as a voltage amplifier as the base and emitter voltages determine the voltage gain. The current gain is determined by the ratio of the collector current to the base current. As a result, when the base current is increased, the output current is increased. This makes the 2SD24570QL ideal for use in control and power circuits, as it can amplify both current and voltage.

The 2SD24570QL also features an internal thermal shutdown protection system. This system will shut down the transistor once it reaches a temperature of 150°C. This protects the device from thermal runaway and potential destruction.

Conclusion

In conclusion, the 2SD24570QL is a useful transistor for power and commutation applications. It operates in a common-emitter configuration and uses two base-emitter junctions, which amplifies both current and voltage. The transistor is also protected by an internal thermal shutdown protection system. This system will shut off the transistor once it reaches a temperature of 150°C, thus ensuring device safety.

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