DDTC124TUA-7

DC Current Gain (hFE) (Min) @ Ic, Vce:	100 @ 1mA, 5V
Base Part Number:	DDTC124
Supplier Device Package:	SOT-323
Package / Case:	SC-70, SOT-323
Mounting Type:	Surface Mount
Power - Max:	200mW
Frequency - Transition:	250MHz
Current - Collector Cutoff (Max):	500nA (ICBO)
Vce Saturation (Max) @ Ib, Ic:	300mV @ 500µA, 5mA
Series:	--
Resistor - Base (R1):	22 kOhms
Voltage - Collector Emitter Breakdown (Max):	50V
Current - Collector (Ic) (Max):	100mA
Transistor Type:	NPN - Pre-Biased
Moisture Sensitivity Level (MSL):	--
Part Status:	Discontinued at Digi-Key
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

The DDTC124TUA-7 is a single, pre-biased, Bipolar (BJT) transistor. It is part of a family of transistors that are designed for applications such as high-speed switching, electronic logic circuits, voltage amplifiers, and audio amplifiers. Each of these different applications presents a unique set of requirements and conditions that must be met in order to maximize the performance and efficiency of the transistor.

Application Field and Working Principle

The DDTC124TUA-7 is an excellent choice for high-speed switching and logic circuits as it features a frequency range of up to 200 MHz and a current gain of up to 140. This allows the transistor to operate at speeds far greater than the typical transistor, and with far greater efficiency. The current gain of the transistor also provides an advantage in terms of power consumption, as higher gains mean less power is consumed in the switching process. In terms of voltage amplification, the DDTC124TUA-7 is capable of delivering amplification up to 20 volts peak-to-peak. This makes it suitable for use in audio amplifiers, where it can be used to boost audio signals to levels appropriate for powering loudspeakers. The DDTC124TUA-7 also has the advantage of being pre-biased, meaning that it does not require an additional bias voltage to function. This reduces the complexity of the circuitry and simplifies the process of designing discrete circuits. This feature also reduces power consumption, as the transistor does not need to expend power to maintain a bias voltage.

Conclusion

The DDTC124TUA-7 is an excellent transistor for a variety of applications, including high-speed switching, logic circuits, voltage amplifiers, and audio amplifiers. Its pre-biased design eliminates the need for a bias voltage, reducing complexity and power consumption. Its frequency range and current gain also prove advantageous in terms of power consumption, as the transistor consumes less power in the switching process. Lastly, its highest voltage amplification of 20 volts peak-to-peak makes it suitable for powering loudspeakers.

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