Transistor Crossover for Roulette Wheel Project

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Discussion Overview

The discussion revolves around finding an American equivalent or crossover for the BC183L transistor used in a roulette wheel project circuit. Participants explore various transistor options that could work in the circuit, considering factors like pinout and current capability.

Discussion Character

  • Technical explanation, Debate/contested, Experimental/applied

Main Points Raised

  • One participant requests an equivalent for the BC183L transistor, highlighting its European origin.
  • Another participant suggests the 2N3904 as a suitable alternative.
  • A different participant notes that the BC213 is a general-purpose NPN transistor and mentions that many small signal transistors could work, depending on voltage and current requirements.
  • Several alternatives are proposed, including the 2N3704, 2N3705, 2N3706, and TIPP31, all of which are said to have the same pinout as the BC213L.
  • One participant warns that the 2N3904 has a different pinout compared to the BC183L, suggesting that while it could work, modifications may be necessary.
  • Another participant emphasizes that any NPN transistor with the correct footprint and current capability should function in the circuit.
  • A participant confirms they have a 2N3904 and seeks clarification on the schematic regarding the emitter, base, and collector connections.

Areas of Agreement / Disagreement

Participants express differing views on the suitability of various transistors, particularly regarding pinout compatibility. There is no consensus on a single exact crossover for the BC183L, and the discussion remains unresolved regarding the best alternative.

Contextual Notes

Participants highlight the importance of pinout compatibility and current capability, indicating that the choice of transistor may depend on specific circuit board requirements.

electricman12
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this circuit

http://www.edutek.ltd.uk/Binaries/Prj%20Roulette/Roulette%20wheel%202.pdf

needs a BC183L transistor...sadly this is a European transistor and I need an American crossover/equivalent...
can anyone tell me what transistor is the EXACT crossover...or a transistor that would work in the circuit?

Oh, here is the main page for the project...
http://www.edutek.ltd.uk/Prj_Roulette_Wheel.html


thank you!
 
Last edited by a moderator:
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2N3904 should work.
 
Well the BC213 is a small signal general purpose plastic NPN transistor and looking at the voltage and current requirements of your circuit, pretty well any such will do the job.

If you are working to a circuit board with a particular pinout the choice is more limited because the L version of the BC 18x series ie BC183L in your case is less common.

Luckily the the commonplace 2N3704 /2N3705 / 2N3706 will all substitute readily in your circuit.
Alternatively a TIPP31 would also fit. (note this is TIPP31 not TIP31)
These all have the same pinout as the BC213L

edit
a 2SC1318 also has the right pinout and will do the job.

The 2N3904 will work but beware the pinout is wrong.

Go well
 
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BC183L has a different pin-out to many other types (1. Emitter 2. Collector 3. Base), 2N3904 is NOT the same, according to data sheets I've just looked up.

You might be able to bend the leads to suit, but you need to be aware of this.
http://www.fairchildsemi.com/ds/2N/2N3904.pdf"

OOps. BC183L, but the problem still stands
 
Last edited by a moderator:
The only requirement is the current capability, look up any transistor that has the right footprint should work. Plenty of NPN general purpose transistors.
 
great! thanks guys! i have a 2n3904 from a previous project...i just need to follow the schematic about where the e,b,c goes right? or is the schematic symbol itself for the BC213L different?
 
Yep. Good luck.
 

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