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Collector- Emitter Voltage VCEO Max:60 V
Emitter- Base Voltage VEBO:5 V
Collector- Base Voltage VCBO:60 V
Maximum DC Collector Current:5 A
Maximum Collector Cut-off Current:200 uA
Mounting Style:Through Hole
Maximum Operating Temperature:+ 150 C
Product Type:Darlington Transistors
Transistor Polarity:NPN
Package Included:
10 x TIP120 Transistors
10 x 2.2k Ohm Resistors
10 x 1N4001 DIODE
Mike
Reviewed in the United States on February 24, 2023
I was trying to build a very rudimentary amplification circuit to drive a small motor using these transistors.And I couldn't figure out why it wouldn't work. I literally stayed up all night trying to figure out what I did wrong looking at the circuit over and over and I just couldn't find anything wrongWell what it tuned out to be was the two 120TIP transistors I got and used were bad right from the beginning as I found out when I pulled it out to test them.I then put a new one back in for testing the circuit and before power was even applied I decided to test continuity of the circuit only to find there was now a short. Looking all across the circuit I couldn't find the short until I took off that transistor and wouldn't you know that one was shorted.No power even went across it and it was already dead. (And if I turned on the board it likely would of killed other components...)Finally... Finally I replaced the transistor again and put the other back on and the circuit worked... For two minutes before the transistor(s) shorted...Now keep in mind the motor is only 8 watts at 4v. So 2 amp load only. Then I have two transistors to share the current so less then 1amp across each transistor (Hence why I don't need a massive heatsink.) 1/5 their rated current...I also had a flyback diode to supress voltage spikes from the motor shutting off. And both bases were feed from their own resistors...These transistors were given the best chances imaginable... Yet they still died in seconds...Right from the start I could tell one transistor was getting much hotter in the circuit then the other even though they should of been sharing current evenly so that is probably part of the issue there as it was another faulty one right off the bat...Overall I am returning these at this point after wasting probably 10ish hours of my life trying to make it work... It just isn't worth it...
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