TR136

Series:	--
Packaging:	Tube
Part Status:	Active
Transistor Type:	NPN
Current - Collector (Ic) (Max):	3A
Voltage - Collector Emitter Breakdown (Max):	400V
Vce Saturation (Max) @ Ib, Ic:	1V @ 500mA, 2A
Current - Collector Cutoff (Max):	--
DC Current Gain (hFE) (Min) @ Ic, Vce:	10 @ 2A, 5V
Power - Max:	60W
Frequency - Transition:	--
Operating Temperature:	150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-220-3
Supplier Device Package:	TO-220AB

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TR136 is a high-performance, low-voltage bipolar junction transistor (BJT) commonly used in electronic applications such as audio amplifier circuits. It has a breakdown voltage of just 6.0 volts and a max operating temperature of 150°C. It is notable for exhibiting a high-speed switch on and off times.Working PrincipleThe basic principle of operation for a BJT involves the flow of minority current carriers, such as electrons or holes, into two regions of an intrinsic semiconductor material. These regions are the emitter and collector, which are respectively connected to a positive and negative supply voltage. Current flow is greatly increased through the collector where a majority current carrier, such as holes or electrons, is injected into the base region of the device which provides the necessary voltage bias to facilitate a significant current flow across the collector.The collector acts as an output region and is typically connected to a load circuit. Thus, a variety of transistors are used as amplifiers, oscillators and switches in applications ranging from radio-frequency amplifiers to digital circuits depending on the size of the bipolar junction transistor and its characteristics.ApplicationsTR136 is a popular choice for use in amplifiers due to its low-voltage operation capability. As an example, a common application is to build a gain stage into a subwoofer or speaker amplifiers or to provide amplification for a microphone system. TR136 could also be used to build low-power, low-input voltage circuits to amplify signal and audio for television displays.Apart from being used as an audio amplifier, TR136 can be used as a switch in a variety of power circuits. It can also be used to build current-limiting circuits which will limit voltage through the collector to a safe level and can also be applied to various relay circuits, including electronic products involving automatic switching.When used as a switch, TR136 was deployed in LCD and mobile phones. This transistor has been used as an integrated circuit in applications such as switching keypads and ringers. TR136 can also be used as part of power Pulse-Width-Modulated (PWM) circuits which govern the amplitude and time width of digital signal pulses.Advantages and LimitationsAs a Bjt, TR136 offers significant advantages in terms of speed of switching and overall performance. It also provides a relatively low cost solution for those looking for a low-voltage solution. Its limitations, however, include its low breakdown voltage, which means it should not be used in high-voltage environments. Also, it has a comparatively low current-gain ratio so its output current is limited.ConclusionTR136 is a low-voltage bipolar junction transistor (BJT) commonly used in a variety of applications including audio amplifiers, as well as for switching and relay circuits. Its switching speed and relatively low cost make it a desirable choice for a variety of applications. However, its low breakdown voltage and current-gain ratio should be taken into consideration when selecting the transistor for a given application.

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