DDTA115ECA-7

Resistor - Emitter Base (R2):	100 kOhms
Base Part Number:	DDTA115
Supplier Device Package:	SOT-23-3
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Power - Max:	200mW
Frequency - Transition:	250MHz
Current - Collector Cutoff (Max):	500nA
Vce Saturation (Max) @ Ib, Ic:	300mV @ 250µA, 5mA
DC Current Gain (hFE) (Min) @ Ic, Vce:	82 @ 5mA, 5V
Series:	--
Resistor - Base (R1):	100 kOhms
Voltage - Collector Emitter Breakdown (Max):	50V
Current - Collector (Ic) (Max):	100mA
Transistor Type:	PNP - 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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DDTA115ECA-7 Bipolar Junction Transistor (BJT) Application and Working Principle

Bipolar junction transistors (BJT) are semiconductor devices that are widely used in a variety of applications such as amplifiers, switches, signal processing, and other signal control functions. The DDTA115ECA-7 is a type of BJT that is classified as a pre-biased single transistor. It is designed to switch loads and amplify signals. BJTs normally consist of two PN-junctions connected in parallel and form three regions, namely the Base, the Emitter and the Collector. In the DDTA115ECA-7, each region is connected to external circuits in order for the transistor to perform its intended function. The Collector is a terminal that is connected to the external circuit, and the Emitter is connected to the ground, whereas the internal Base is connected to the Base circuit. The DDTA115ECA-7 works by using an amplified voltage difference to control the current that flows between the Collector and the Emitter. The output current is determined by the amount of current that flows between the Base and the Emitter, known as the Base current, and is dependent on the Base-Emitter voltage and temperature. The DDTA115ECA-7 has a maximum guaranteed current gain of 15dB, with a maximum operating frequency at 250 kHz. It has a minimum guaranteed DC voltage gain of 60dB. The Collector base voltage for operation is 45V, and the collector current is a maximum of 400mA. The transistor also includes a built-in pre-bias feature, allowing it to operate from the Base, allowing for the setup of a pre-determined Collector-Emitter voltage when the transistor is off. The DDTA115ECA-7 can be applied in a variety of applications, including amplifier circuits. It is suitable for low frequency applications such as audio frequency amplifiers and also for high frequency applications such as radio transmitters. It can also be used in decoding and encoding signals, switching circuits, and other data processing functions in consumer electronics. In conclusion, the DDTA115ECA-7 is a pre-biased single transistor that can be used in a variety of applications, mainly amplifying and switching signals. With its pre-bias feature and its maximum DC voltage gain and Collector current, the DDTA115ECA-7 is an ideal choice for consumer electronic applications.

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