Part Number: HJ Function: NPN Epitaxial Silicon Transistor Maker: Unspecified Pinouts: HJ datasheet. Description: Datasheet. Type Designator: MJE Material of Transistor: Si. Polarity: NPN. Maximum Collector Power Dissipation (Pc): 40 W. Maximum Collector-Base Voltage |Vcb|. HJ Hefei Hejing datasheet pdf data sheet FREE Datasheets (data sheet) search for integrated circuits (ic), semiconductors and other electronic.
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C is probably the tiny pad, B is probably the long rail pad, and E is the large square pad. If the LED does not light up, then reverse the two legs and if it lights up, you now have one diode. I made it simpler from the rambling. It’s dead, you need a new transistor. In NPN, the opposite is true. Im going to assume the emitter is the large pad, so the base is going to be one of the others, and the collector is obviously the last.
Sorry if this is a very pedestrian question, I’ve already tried my best on google: The silicon is normally bonded to the collector, which would match the ECB left to right, flat writing side facing you, pins facing downwards pinout of the CD Now amend that circuit so that the negative side h the battery or ground if you want to call it is touching one leg of your transistor, and another leg is touching the LED. FYI this is a high voltage transistor designed for switching operation, very commonly found in compact fluorescent lamps.
This is a transistor diode tester. Please read this first! Transistors function in their active region as class A amplifiers thanks to the base-collector being reverse biased while the base-emitter is uj biased.
Thank you my friend, this is very helpful. Can anybody help me identify the legs of this transistor? Put two of the legs between the LED.
Welcome to Reddit, the front page of the internet. Not to worry, I have 2 exactly the same. If you don’t have a DMM, use ohms law to build this https: Then test the other two legs. With a DMM, you can test the legs and each pair that has low resistance is a forward biased junction, any pair that has high resistance is a reverse biased junction.
Can anybody identify which leg is which from the insides?
HJ13002 – NPN Epitaxial Silicon Transistor
But I’m not positive it was the right datasheet. The alternative is that the P side must be at least more positive than the N side respectively. You will, of course, read the same unreadably high ohm resistance between collector-emitter regardless of bias. If you have a DMM, you should read something like megaohms between a forward biased base-collectopr and a forward biased base-emitter. When the voltage rises high enough bj would activate the junction and conduct.
Doing so would actually improve your knowledge and and your soldering skill and get you 13020 really cheap tools, although DMMs these days aren’t very expensive.
For instance, a beta gain transistor circuit would light up one LED if the gain is overa different LED if its over but underand so on. I found this in a light bulb, but can’t tell which leg is which. You could test this yourself you know. In a PNP, the base is the N, so it must be negative with respect to the emitter and it will be biased and current will flow.
hj Stock and Price by Distributor
Become a Redditor and uj to one of thousands of communities. Basically, you create a circuit that needs the transistor to behave with X amount of gain otherwise the current is too weak to light the LED. If you don’t have a DMM, use ohms law to build this. I don’t have a DMM but I’ll have to look into it.
(PDF) HJ13002 Datasheet download
If the LED still lights up, then the legs are of a diode in ‘proper orientation’. I just cracked open this one hoping to illuminate which pin is which. Info about building and modding: Want to add to the discussion? Submit a new link. This is an open community for the do-it-yourself pedal builders of reddit! Submit a new text post. So I’m attempting my first pedal, and I’m totally new to electronics altogether.
The base must also be negative with respect to collector and current will flow.
You can create your own test equipment for general guidelines if you’re creative. It lights up if the diode of the transistor is forward biased.
You should read open circuit or beyond the measurement of your DMM in ohms for reverse biased base-collector or base-emitter.