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Question About Something I bought

SparkyCal

Mar 11, 2020
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I purchased an assortment of electronic components on Amazon. More specifically, this one:

https://www.amazon.ca/gp/product/B07F7ZN695/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

I thought it would be a good deal, and I was particularly interested in the transistors. I was thinking that with so many transistors included, there would be some of the common ones, like the BC547.

I am not saying it is a bad deal, because it did come with a lot of components, but when it came to the transistors, there were none of the common ones. I took a picture of what it came with. They are all in little bags, but I had to write the type of each little bag. You'll notice that most all of them end with a letter plus the number 331. H331. P331 etc. The picture shows the entire type.

Is anyone familiar with these transistor types and what they are used for? And why the batch did not include common types.

Thank-you
 

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bertus

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Nov 8, 2019
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Hello,

I see this list on the page :
S9012, S9013, S9014, S9015, S9018, A1015, C1815, A42, A92, 2N5401, 2N5551, A733, C945, S8050, S8550, 2N3906, 2N3904
The A2015 is likely an 2SA2015
The C1815 is likely an 2SC1815
The A42 is likely an 2SA42
The A92 is likley an 2SA92
The A733 is likely an 2SA733
The C945 is likely an 2SC945

This book will tell you already some data on the transistors:
https://archive.org/details/TransistorAndDiodeDatabook1stEd1973/mode/2up

Bertus
 

Bluejets

Oct 5, 2014
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As an BTW comment, Ralph Bacon is starting a small series on transistors mosfets etc. at the link below.
Might be helpful to you as well.

 

SparkyCal

Mar 11, 2020
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Bertus and Bluejets. Thank-you. I did some quick googling after I posted my question. I know you folks mentioned this to me before about datsheets and the like. What I started doing is ggogling each transistor and then looking for a data sheet and the equivalency thing. Now I am writing on the back of each of the bags, the transistors that are equivalent, or that it can be swapped for. I don't think there is an easier way.
 

Bluejets

Oct 5, 2014
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Bertus and Bluejets. Thank-you. I did some quick googling after I posted my question. I know you folks mentioned this to me before about datsheets and the like. What I started doing is ggogling each transistor and then looking for a data sheet and the equivalency thing. Now I am writing on the back of each of the bags, the transistors that are equivalent, or that it can be swapped for. I don't think there is an easier way.

That's about all anyone else does.......except I draw the pinout as well, saves looking up data sheets each time.
 

SparkyCal

Mar 11, 2020
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Thanks Bertus. I have one of those books and have been slowly reading it; as I find time.
 
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