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Author Topic: Identifying Transistors/cross reference?  (Read 4866 times)
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ve6pg
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« on: June 12, 2012, 01:54:28 PM »

  Hi from Tim...is there a website, that does a cross ref fer transistors?...some of these are marked with numbers like "c2086 49b-d" etc...so, what is this thing?...npn, pnp, 2n222?...i know google is my friend, but...i'm on dial-up, takes too long to search...if you know of a good site, please let me know...
..tnx...

..tim..

..sk..
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KA2DZT
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« Reply #1 on: June 12, 2012, 02:15:49 PM »

Tim,

How did you make out with the rotor?  Any luck?

As for the transistors, everyone should have a SS cross reference book.

Google NTE and see if they have their cross reference info on line.

Fred
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ve6pg
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« Reply #2 on: June 12, 2012, 08:56:20 PM »

..fred...rotor werking ok...just testing, at this point, for future use...i have a few projects i'd like to do, and all these transistors have weird company numbers, etc..
..tnx..

..tim..

..sk..
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WB6NVH
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« Reply #3 on: June 12, 2012, 10:58:08 PM »

If this helps, Japanese transistors drop the "2S" on the numbers, so C2086 should be a 2SC 2086 and NTE should show an NTE # which can then be backwards cross-referenced to some JEDEC numbers.  Kind of, sort of, in that doing it that way can sometimes get you an under-rated part.  Most of the time it isn't that critical.  Just double-check the specs of the substitute.
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Geoff Fors
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« Reply #4 on: June 13, 2012, 01:33:48 PM »

I use this site for datasheets, it's pretty good.
http://datasheetcatalog.com/

Transistor Replacement Guide - 1973 GE on bunkerfodoom.com . It is 250MB pdf, unfortunately not individual JPG pages which can be conveniently looked through. Someone with a newer version of adobe could possibly d/l it and reduce the size greatly. Inside is a cross reference to GE universal types with their specs. Not sure if it is useful, maybe as much as an NTE catalog.

C2086 (nor 2SC2086) is not inside.

2N2222 is inside. That's one of the most popular types ever and is still made, and itself should be directly on the internet. It has its own wikipedia page. 
Check the brand carefully, because it has become so generic-ized that it could be rated 30V to 40V, 0.8A and be in several packages, depending when and by whom it was made. The -A is usually 40V, the plain one is 30V. Generally it is a 30V, 0.8A, 0.5W NPN transistor with an hfe of about 250-300.

It's best to find several transistor books covering the time span, just like having several editions of each tube maker's books. I remember dialup, used to wait for bedtime to start large downloads.


* philips_2n2222.pdf (51.98 KB - downloaded 106 times.)
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« Reply #5 on: June 13, 2012, 08:38:44 PM »

NTE xref site:    http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm



p
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WB6NVH
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« Reply #6 on: June 13, 2012, 11:00:05 PM »

2SC2086 is an RF amplifier transistor for the HF range which may be why it isn't in NTE, which doesn't have much in the way of replacements for communications semiconductors.  But Google has many links to datasheets.
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Geoff Fors
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« Reply #7 on: June 13, 2012, 11:30:15 PM »

2SC2086 is an RF amplifier transistor for the HF range which may be why it isn't in NTE, which doesn't have much in the way of replacements for communications semiconductors.  But Google has many links to datasheets.

It's listed. The 2SC2086 replacement is NTE340: http://www.nteinc.com/specs/300to399/pdf/nte340.pdf

Even the famous CB output transistor of the 70's, 2SC1307, replacement is listed: http://www.nteinc.com/specs/200to299/pdf/nte236.pdf
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« Reply #8 on: June 13, 2012, 11:33:01 PM »

2SC2086 is an RF amplifier transistor for the HF range which may be why it isn't in NTE, which doesn't have much in the way of replacements for communications semiconductors.  But Google has many links to datasheets.

My NTE book shows 2CS2086 as NTE340, power output 0.6w 130-175mhz

Fred
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« Reply #9 on: June 14, 2012, 11:19:53 AM »

http://www.alltransistors.com/
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WB6NVH
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« Reply #10 on: June 18, 2012, 12:27:34 AM »

Ah, I didn't look.  Got the impression from the posts above mine that it wasn't in NTE.
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Geoff Fors
Monterey, California
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