FJY4005R Discrete Semiconductor Products

DC Current Gain (hFE) (Min) @ Ic, Vce:	30 @ 5mA, 5V
Base Part Number:	FJY4005
Supplier Device Package:	SOT-523F
Package / Case:	SC-89, SOT-490
Mounting Type:	Surface Mount
Power - Max:	200mW
Frequency - Transition:	200MHz
Current - Collector Cutoff (Max):	100nA (ICBO)
Vce Saturation (Max) @ Ib, Ic:	300mV @ 500µA, 10mA
Series:	--
Resistor - Emitter Base (R2):	10 kOhms
Resistor - Base (R1):	4.7 kOhms
Voltage - Collector Emitter Breakdown (Max):	50V
Current - Collector (Ic) (Max):	100mA
Transistor Type:	PNP - Pre-Biased
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The FJY4005R is a pre-biased, single-pole, double-throw transistor designed and manufactured by FUJI Micro devices. Its biasing is circuit-configured and thereby eliminates the need for any additional formal biasing methods. It has high input impedance with low offset voltage and small temperature drift. This transistor is suitable for a broad range of applications ranging from isolation amplifiers, comparators, and auto-zero applications.

Application Fields

The FJY4005R is an ideal transistors for amplifying and switching small signals in different types of applications. It is widely used in RF receivers (transistor radios, cellular phones, analog TV receivers, etc), instrumentation amplifiers, as well as in the field of audio, including preamplifiers, amplifiers and audio jacks. It can also be used in analogue to digital converters, logic circuits and memory circuit applications.

Working Principle

The FJY4005R operates using the complementary principle. When a positive voltage is applied to the base of this transistor, an NPN transistor conducts while a PNP variant is cut off due to its negative base voltage. When the negative voltage is applied, the PNP transistor conducts whereas the NPN transistor is cut off. This complementary behavior allows the FJY4005R to switch signals between two different voltage levels. The FJY4005R also supports a wide range of biasing conditions. Its low leakage current and wide input offset range enable it to be used in low power applications. Its low resistance junction and wide array of voltage ranges support a wide range of operating environments.

Conclusion

The FJY4005R is a highly versatile pre-biased transistor that can be used for a wide array of applications. Its wide biasing range and input offset range support a variety of operating conditions and make it an ideal choice for amplifying and switching small signals. With its complementary principle, it can easily switch between two voltage levels. Therefore, it is an ideal choice for isolating, amplifying, and switching applications.

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