KSC900LBU

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Transistor Type:	NPN
Current - Collector (Ic) (Max):	50mA
Voltage - Collector Emitter Breakdown (Max):	25V
Vce Saturation (Max) @ Ib, Ic:	200mV @ 2mA, 20mA
Current - Collector Cutoff (Max):	50nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	350 @ 500µA, 3V
Power - Max:	250mW
Frequency - Transition:	100MHz
Operating Temperature:	150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92-3
Base Part Number:	KSC900

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Introduction

The KSC900LBU is a small, surface mountable NPN transistor available in a SOT23 package. Constructed from an epitaxial silicon material, it is specifically designed for use in applications where low voltage switching, level shifter and buffer applications are desired. This article is intended to provide an overview of the typical KSC900LBU application fields and their associated working principles.

Applications

The KSC900LBU devices are primarily used in digital logic and switching applications, including those which require circuitry to operate at lower voltage levels. Standard applications include digital logic buffers, level shifters, and low-noise amplifiers.When used as a buffer, the KSC900LBU can be used to translate a signal from a low voltage level to a higher voltage level and vice versa. This ability to provide a high switching speed with low power consumption makes the KSC900LBU an attractive choice for applications in which space is at a premium.In terms of level translations, the KSC900LBU is used to bring one voltage source in sync with the other, allowing for seamless communication between two different logic states. As with buffer applications, the KSC900LBU’s low power consumption and high switching speed make it an ideal choice for low-noise noise amplification applications.

Working Principle

The KSC900LBU is a NPN bipolar junction transistor (BJT). Like all BJT transistors, the KSC900LBU is essentially two back-to-back diodes, with a base in between them. When the base is driven positive relative to the emitter and the collector, the junction between the two diodes is forward biased, which allows electrons to flow freely between them. This, in turn, allows current to flow from the emitter to the collector, which allows the KSC900LBU to function as an amplifier or buffer.When no bias voltage is applied to the base, the KSC900LBU behaves as an open circuit and does not conduct current. This makes it ideal for applications in which low power consumption is desired, such as level shifts and buffer circuits.The KSC900LBU also offers superior switching performance. When the base is driven with a voltage greater than 0.5V, the transistor is said to be “on” and the collector voltage will go low. With no applied bias, the KSC900LBU will be “off” and the collector voltage will remain high. This attractiveness to digital logic circuits makes the KSC900LBU a desirable choice in low-voltage applications.

Conclusion

In conclusion, the KSC900LBU is an attractive, space-saving device designed for low-voltage switching and buffering applications. It’s fast switching performance and low power consumption makes it a desirable choice in digital logic and level shifting applications. The KSC900LBU is a NPN transistor, consisting of two back-to-back diodes with a base in between them. When driven with a voltage greater than 0.5V, the collector voltage will go low, allowing current to flow from the emitter to the collector. With no applied bias, the KSC900LBU will be “off” and the collector voltage will remain high, making it an ideal choice for low-power applications.

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