Author Topic: Early 2N2146 [ahh NOPE that's 2N4126] pnp, 1000s of the things... what to do?  (Read 1449 times)

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Offline peteb2Topic starter

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2N2146.... So i've ended up with around 5000++ 2N4126 T0-92 that've been stored in a burst baggy meaning their legs are a bit dirty needing a simple quick scrape prior to soldering etc....

Ridiculous issue is that even though i've tried to pass out handfuls of the things free, everyone says; "oh pity they're pnp, there aint much yuh can do with 'em, no thanks"...

So, here's a challenge: What's a circuit that'll consume as many as possible of the dang things as possible please? It just seems a terrible waste to just chuck them. They are annoyingly taking up valuable storage space though...
« Last Edit: September 25, 2019, 06:03:16 am by peteb2 »
 

Offline AngusBeef

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Offline bob91343

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Re: Early version 2N2146 pnp, 1000s of the things... what to do?
« Reply #2 on: September 25, 2019, 04:14:41 am »
I am in a similar boat with 1N4148 diodes.  I must have thousands of them.

Rated 1 A and 100 V, fairly fast.

I also have bags of resistors that aren't what the color code indicates.  Whether they are mislabeled or have drifted I don't know.
 

Offline edavid

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Re: Early version 2N2146 pnp, 1000s of the things... what to do?
« Reply #3 on: September 25, 2019, 04:23:43 am »
I don't think you mean 2N2146... that's a TO-3 transistor, so 5000 of them would require a really large bag.
 

Offline james_s

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Re: Early version 2N2146 pnp, 1000s of the things... what to do?
« Reply #4 on: September 25, 2019, 04:27:05 am »
Should be able to build just about anything you can build with NPN with PNP. If you have thousands of them it sounds like a discrete digital clock might be a good one.
 

Offline tautech

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Re: Early version 2N2146 pnp, 1000s of the things... what to do?
« Reply #5 on: September 25, 2019, 05:21:56 am »
Drop by for a coffee sometime Pete and I'll take a few hundred off you to spread around between mates.
Maybe I can swap for a few things I have 1000's of ?
Nuthing exciting only passives.  ::)
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Offline peteb2Topic starter

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Re: Early version 2N2146 pnp, 1000s of the things... what to do?
« Reply #6 on: September 25, 2019, 05:59:35 am »
Should be able to build just about anything you can build with NPN with PNP. If you have thousands of them it sounds like a discrete digital clock might be a good one.

....ooops massive dyslexia on the keyboard!!! What a clutz!!!  :palm: :palm: (suitable edit done to my OP)....
 

Offline edavid

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Re: Early version 2N2146 pnp, 1000s of the things... what to do?
« Reply #7 on: September 25, 2019, 03:04:06 pm »
I am in a similar boat with 1N4148 diodes.  I must have thousands of them.

Rated 1 A and 100 V, fairly fast.

Just so no one injures themselves, the actual spec is 75V, 200mA.  Don't try to put 1A through a 1N4148.
 

Offline Conrad Hoffman

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Don't know how quiet they are. Maybe you could do a massively paralleled amplifier front end for low noise? Almost anything you can do with an NPN, you can do with a PNP.
 

Offline tautech

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Offline amyk

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Re: Early 2N2146 [ahh NOPE that's 2N4126] pnp, 1000s of the things... what to do?
« Reply #10 on: September 26, 2019, 02:02:34 am »
Early DTL/RTL logic used exclusively PNP (and Germanium) transistors, 5000 is probably enough to build a simple 8-bit CPU.
 


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