DTA044TUBTL

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Transistor Type:	PNP - Pre-Biased
Current - Collector (Ic) (Max):	60mA
Voltage - Collector Emitter Breakdown (Max):	50V
Resistor - Base (R1):	47 kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce:	100 @ 5mA, 10V
Vce Saturation (Max) @ Ib, Ic:	150mV @ 500µA, 5mA
Current - Collector Cutoff (Max):	500nA (ICBO)
Frequency - Transition:	250MHz
Power - Max:	200mW
Mounting Type:	Surface Mount
Package / Case:	SC-85
Supplier Device Package:	UMT3F

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Introduction to DTA044TUBTL

The DTA044TUBTL is a single-transistor bipolar junction transistor (BJT) pre-biased solution manufactured by STMicroelectronics. This transistor is typically used in off-line flyback and forward converters, and in power supplies. The NPN low-saturation voltage transistor is designed to offer exceptional performance over a wide range of operating conditions to help reduce the yield issue risk over a temperature and load range. The device\'s high voltage, low dropout and high dielectric strength make it a preferred choice for off-line power supplies.

Application Fields

The DTA044TUBTL is typically used in off-line converters and power supplies, including mains adapter, LED driver and lamp driver, consumer, Chinese technology, fiber optic driver, consumer and industrial, medical, and automotive. It offers excellent value for its cost, particularly for consumer applications like LED drivers, adapters, and other off-line power supplies. The DTA044TUBTL can handle up to 125W at a temperature of 150°C (overmold temperature) and a total RDS(on) of 0.5Ω. Due to its high voltage and low dropout, it is ideally suited for flyback, forward and multiple output converters, as well as buck and boost converters. Its high voltage capability ensures that it can handle the high voltage concentrations experienced in flyback applications without compromising the performance of the system. It also has an excellent thermal performance, making it suitable for high thermal load applications. Additionally, the DTA044TUBTL offers reliable operation over a wide temperature range and low EMI noise. It is particularly suited for medical, industrial and medical applications, as it helps to reduce risk of yield issues and eliminate the need for manual calibration work.

Working Principle

The DTA044TUBTL is a single pre-biased bipolar junction transistor (BJT). The device works by operating an N type material (called the emitter) in between two P type materials (called the base and collector). The emitter–base junction is forward biased and the collector–base junction is reverse biased. The NPN BJT-type device works by using an N material as the emitter and two P materials as the base and collector. When the emitter–base junction is forward biased, holes are injected from the base into the emitter. Electrons are then injected from the emitter into the base, creating a current flow from the emitter to the base. These holes and electrons recombine, creating an electron flow from the base to the collector. The DTA044TUBTL can be used as a high-current switch, due to its low saturation voltage. The device can handle 7A continuous collector current with a 1A base drive current and a 0.6V Vbe. The transistor is designed to offer low distortion because of its low saturation voltage and it helps to provide excellent system performance when used for buck and boost converters. The DTA044TUBTL is pre-biased so that it requires only minimal base drive current. This allows systems to operate efficiently without needing a discrete transistor or extraneous components. The device is also designed to operate over a wide operating temperature range, making it suitable for demanding environments.

Conclusion

The STMicroelectronics DTA044TUBTL is a single pre-biased bipolar junction transistor (BJT). It is used in off-line flyback, forward, buck and boost converters, and in power supplies, particularly for LED and medical applications. The device works by combining an N material as the emitter and two P materials as the base and collector. The DTA044TUBTL offers excellent performance over a wide temperature and load range, and is designed to have low saturation voltage, low distortion and wide operating temperature range. It is a cost-effective solution for applications that require high voltage and low distortion.

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