Can use to switch high current (upto 5A) loadsĢD dimensions will help you in placing this component at the time of making circuit on perf board or a PCB.In the below circuit I have used the TIP122 to control a 48V motor which has a continuous current of about 3A. How to use TIP122:Īlthough TIP has high collector current and current gain, it is fairly simple to control the device since it has an Emitter-Base voltage (VBE) of only 5V and base current of only 120mA. So, if you looking for a transistor that could be easily controlled by a Logic device to switch high power loads or to amplify high current then this Transistor might be an ideal choice for your application. Although care has to be taken to check if the logic device can source up to 120mA. This transistor has a low Base-Emitter Voltage of the only 5V hence can easily control by a Logic device like microcontrollers. This transistor is known for its high current gain (hfe = 1000) and high collector current (IC =5A) hence it is normally use to control loads with high current or in applications where high amplification is require. Collector-Emitter voltage (VCE) is 100 V.Continuous Collector current (IC) is 5A.High DC Current Gain (hFE), typically 1000.Pin Configuration: NumberĬontrols the biasing of transistor, Used to turn ON or OFF the transistorĬurrent flows in through collector, normally connected to loadĬurrent Drains out through emitter, normally connected to groundįeatures of TIP122 NPN Darlington transistor: This increases the current gain and current rating of this transistor. The Darlington pair inside this transistor is shown clearly as its internal circuit schematic belowĪs you can see, there are two transistors inside this TO-220 package in which the emitter of the first transistor is connected with the base of the second transistor and the collector of both transistors are connected together to form a Darlington pair. It can also withstand about 100V across its collector- Emitter hence can be used to drive heavy loads. It functions like a normal NPN transistor, but since it has a Darlington pair inside it has a good collector current rating of about 5A and a gain of about 1000. The TIP122 NPN Darlington transistor is a Darlington pair NPN transistor.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |