BD238STU

Series:	--
Packaging:	Tube
Part Status:	Active
Transistor Type:	PNP
Current - Collector (Ic) (Max):	2A
Voltage - Collector Emitter Breakdown (Max):	80V
Vce Saturation (Max) @ Ib, Ic:	600mV @ 100mA, 1A
Current - Collector Cutoff (Max):	100µA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	25 @ 1A, 2V
Power - Max:	25W
Frequency - Transition:	3MHz
Operating Temperature:	150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-225AA, TO-126-3
Supplier Device Package:	TO-126
Base Part Number:	BD238

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Introduction

The BD238STU is an NPN type transistors commonly known as a single bipolar junction transistor (BJT). It is mainly used in electronic circuits or as a switch or amplifier in certain applications. This article will explain the field of application of the BD238STU, as well as their operating principle.

Application Field

The BD238STU is mainly used as a switch or amplifier in electronic circuits. It is predominantly used to amplify signals in both analog and digital circuits. This transistor is especially popular when high gain, high reliability, low noise, and low power consumption is required. The BD238STU can be used for any other application where a controlling device is needed for current amplification. Its switching and amplification capabilities are widely used in many applications, including digital computers, household appliances, automotive electronics, and industrial electronics. It has also been used in some aerospace projects.

Working Principle

The BD238STU is a bipolar NPN transistor, which means that it is composed of three terminals: the Collector, the Base and the Emitter. When the Base terminal is connected to a voltage source (normally 0V or a positive voltage but it can also be negative in certain applications), the transistor conducts current from the Collector terminal to the Emitter terminal, allowing the transistor to amplify signals passing through it.The amount of current flowing from the Collector to the Emitter is determined by the amount of voltage applied to the Base terminal. The more voltage applied to the Base terminal, the more current will flow from the Collector to the Emitter. This is known as the gain of the transistor and is often referred to as the transistor’s “on/off current ratio”. Once the voltage applied to the Base terminal is increased to a certain level, enough current will flow from the Collector terminal to the Emitter terminal that the transistor will be “on”, becoming fully conductive and allowing the signals passing through it to be amplified. This is known as the “turn-on point” of the transistor.

Conclusion

The BD238STU is a single bipolar junction transistor (BJT) mainly used as a switch or amplifier in electronic circuits. It is used to amplify signals passing through it and is an ideal choice when high gain, high reliability, low noise and low power consumption is required. It has a wide range of applications including digital computers, household appliances, automotive electronics, and industrial electronics. The working principle of the BD238STU is determined by the amount of voltage applied to the Base terminal and the current flowing from the Collector to the Emitter.

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