BC857CDW1T1

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Transistor Type:	2 PNP (Dual)
Current - Collector (Ic) (Max):	100mA
Voltage - Collector Emitter Breakdown (Max):	45V
Vce Saturation (Max) @ Ib, Ic:	650mV @ 5mA, 100mA
Current - Collector Cutoff (Max):	15nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	420 @ 2mA, 5V
Power - Max:	380mW
Frequency - Transition:	100MHz
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	6-TSSOP, SC-88, SOT-363
Supplier Device Package:	SC-88/SC70-6/SOT-363
Base Part Number:	BC857CD

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BC857CDW1T1 Applications and Working Principle

The BC857CDW1T1 is a small signal NPN bipolar junction transistor array with multiple pins for the user to manipulate. These transistors are commonly used in applications such as amplifying signals, driving digital logic, and generally providing current gain in circuits where a large current draw is not required.The BC857CDW1T1 is a type of bipolar junction transistor, or BJT. BJT transistors are widely used in several applications, from amplifying signals, to digital logic and switch driving. These transistors are made of two junction layers, called the emitter-base junction and the collector-base junction – both of which are named because of the physical shape of the layers. Each junction functions to carry out the current flow through the transistor with the emitter-base junction allowing the flow of electrons, while the collector-base junction allows the flow of holes.The BC857CDW1T1 works by controlling current flow between its three connections, the emitter, collector, and base. This current flow is what is known as current poise, and can be achieved utilizing the voltage and current of the power source connected to the transistor. The theory of operation for a BJT is quite simple – when a voltage is applied to the base of the transistor, it creates an electric field across the two junctions. This electric field in turn causes holes and electrons to be drawn from the source and mixed together, creating a current that flows between the collector and emitter.For transistor arrays such as the BC857CDW1T1, the main apparatus of the chip consists of multiple transistors that can be used to either boost the current gain or to provide digital logic functions, such as Boolean operations. The BC857CDW1T1 is typically used in applications, such as those in communication, consumer electronics, and automotive products, requiring low power consumption, high gain and good frequency response. Generally speaking, they are reliable and versatile chips that can be used in many applications where low power, high gain and good frequency response are required.When it comes to the physical layout of the BC857CDW1T1, typically, the package layout comprises two columns of three pins across each side, with the collector and emitter pins located in the center, and the base pins located on the outside. To connect the BC857CDW1T1 array to other components, usually only requires the collector and emitter pins to be wired, with the collector and emitter pins surrounded by either a common ground or a supply voltage, while the base pins are left unconnected.In conclusion, the BC857CDW1T1 is a small signal NPN bipolar junction transistor array, with multiple pins for the user to manipulate. This array can be used in many applications, such as amplifying signals, driving digital logic and providing current gain where a large current draw is not necessary. When it comes to physical layout, the BC857CDW1T1 is typically laid out in two columns of three pins across each side, with the collector and emitter pins located in the center, and the base pins located on the outside.

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