Hello, i am using a transistor for some led but i am not quite sure i am wiring it 100% correctly and i wanna check before i may ruin things. i am using this transistor: BD136 first page of datasheet: [image] and this is my circuit based on what i found: [20241030_150747] I know the transis…

[image] jasper1234567890: cause a "chain reaction" of actions that are not ok. Believe me it's not going to happen with a few cheap LEDs but if you want you can use separate resistors of 75 ohms each

[image] jasper1234567890: i am using this transistor: BD136 A BD136 is a PNP transistor

oh, that is strange. Then why does the datasheet say that is it a NPN?

135, 137, 139 != 136 Maybe you mistyped something. Please clarify.

wel yes i can see that but what does this sentence mean then? [image]

my first language is not english so i may have understood the meaning of Complement wrong

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[image] here is an image of the actual transistor i found [image] but the arrow points in different directions with both images? what does this mean?

Nice - still, it's not suitable for your circuit. NPN emitter points out.

How is it not suitable for my circuit? please explain. is there a way i can modify my ciruit to make it work?

Correct way of using an NPN transistor

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2112 October 30, 2024, 2:17pm 2

A BD136 is a PNP transistor

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Correct way of using an NPN transistor

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