i need 2 transistors.

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dacflyer
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i need 2 transistors.

Post by dacflyer » Thu Jun 18, 2009 7:03 pm

i need 2 transistors, new or used.. on-line ordering is costing more than the parts.
does anyone have these parts that i could buy from them ?
i need for a amplifier i am repairing.
2SA1215
2SC2921
same as NTE33 & NTE34
or ECG33 & ECG34

parts were listing as 4.00 each, but S/H would cost me 12.00

ronniereeder
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Re: i need 2 transistors.

Post by ronniereeder » Fri Jun 19, 2009 8:17 pm

Part # Uploaded Ctry Qty Supplier
NTE 330 5/13/2009 US 1 Get pricing info and buy online now. Electronic Supply Co-Lancaster
NTE330 6/19/2009 US 27 Get pricing info and buy online now. Newark
NTE330 6/19/2009 US 19 Solid State, Inc.
NTE330 6/19/2009 US 27 NTE Electronics Factory Stock
NTE330 6/10/2009 US 1 Linear Electronics Co.
NTE330 5/29/2009 US 4 Green Brook Electronics
NTE330 5/27/2009 SE 15 Elfa AB

Part # Uploaded Ctry Qty Supplier
NTE 340 5/13/2009 US 1 Get pricing info and buy online now. Electronic Supply Co-Lancaster
NTE 340 5/13/2009 US 5 Get pricing info and buy online now. Electronic Supply Co-Columbus
NTE340 6/19/2009 US 105 Solid State, Inc.
NTE340 6/19/2009 US 150 Get pricing info and buy online now. Newark
NTE340 6/19/2009 US 19 Get pricing info and buy online now. Mouser Electronics Inc.
NTE340 6/19/2009 US 150 NTE Electronics Factory Stock
NTE340 6/19/2009 US 2 Get pricing info and buy online now. Mountain States Electronics
NTE340 6/17/2009 US 2 L & S Electronics
NTE340 6/10/2009 US 5 Linear Electronics Co.
NTE340 5/29/2009 US 4 Green Brook Electronics

Maybe this will give you a starting place.
RRR

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reloadron
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Re: i need 2 transistors.

Post by reloadron » Sat Jun 20, 2009 2:21 am

When I get into the office on Monday I'll give a lookie. Don't have any here at the house.

Ron

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dacflyer
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Re: i need 2 transistors.

Post by dacflyer » Sat Jun 20, 2009 7:24 pm

thanks,, they are for the finals of a power amp. ( sony home amp )

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reloadron
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Re: i need 2 transistors.

Post by reloadron » Mon Jun 22, 2009 1:30 pm

I looked in my work stash and no luck but I have a collection of old SK (RCA) transistors and never got a chance to cross to a SK number. Maybe tomorrow.

Ron

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Re: i need 2 transistors.

Post by CeaSaR » Mon Jun 22, 2009 5:27 pm

Did a quick Google - The 3 listed as sellers that have it are:

http://www.newark.com/ $5.58 (2SA) & $5.99 (2SC)
http://www.vctechnologyinc.com/ $5.00 (2SA) & $2.00 (2SC)
http://www.bdent.com/ $6.50 (2SA) & $6.53 (2SC)

Didn't check on shipping.

CeaSaR
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dacflyer
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Re: i need 2 transistors.

Post by dacflyer » Tue Jun 23, 2009 6:32 am

i have no problem to find the part, its the killer shipping and handling that cost more than the parts.

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Re: i need 2 transistors.

Post by haklesup » Tue Jun 23, 2009 8:44 am

i have no problem to find the part, its the killer shipping and handling that cost more than the parts.
That's life in the slow lane. Maybe you can buy something else you need at the same time.

These parts are 160V Vceo and 5A Ic. Maybe you can search for some subs based on the specs and list those. Anything with similar Vceo and higher Ic might work just as well. Can I assume these are used in a push pull output section

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Re: i need 2 transistors.

Post by MrAl » Tue Jun 23, 2009 11:48 am

Hi,

The package type is very strange though...dont know if he wants to mod the physical too or not...
LEDs vs Bulbs, LEDs are winning.

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dacflyer
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Re: i need 2 transistors.

Post by dacflyer » Tue Jun 23, 2009 12:38 pm

i think its a push / pull.
just looking for the generic replacements or origionals..
if i find nothing by the end of the week here, i'll just bite the bullet and order them,,,

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reloadron
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Re: i need 2 transistors.

Post by reloadron » Tue Jun 23, 2009 1:40 pm

I looked in my old SK bins today without luck. I couldn't even find a SK cross. Yeah, you mention a strange package, is it sort of round?

Ron

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Re: i need 2 transistors.

Post by CeaSaR » Tue Jun 23, 2009 2:29 pm

They're actually pretty large units with different sizes listed. Data sheets below:

http://www.ampslab.com/PDF/2sa1215.pdf
http://www.datasheetcatalog.org/datashe ... SA1215.pdf

http://www.datasheetcatalog.org/datashe ... SC2921.pdf
http://tvmodule.com/shop/SemiConductor- ... p1291.html

The 2SC2921 didn't have a sheet at ampslab, so I found a picture of it at tvmodule.com.
Looks to be the same size.

Oh, I did a quick check for shipping at tvmodule (both trans are listed at $6.75) and
Fedex will ship ground to the Big Apple for approx. $8.5 . No idea where you are.

CeaSaR
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haklesup
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Re: i need 2 transistors.

Post by haklesup » Tue Jun 23, 2009 2:39 pm

Oops, did I say 5A=Ic I meant 15A and its a 150W package. I looked at several datasheets and it comes in either a MT-200 package (like a really wide body oversize TO-220) or a TO-247 which looks like a TO-220 but twice the size.

If any of you are looking at TO-220 packages, it aint them. These are big guys. I know I don't have anything in that package. don't even need to look at part numbers.

One might occasionally find the NPN one (or a similar package at least) lurking in the horizontal circuit of a larger tube CRT TV set but not the PNP one. I've used 1 ohm resistors in this package but never a transistor.

It must be mounted on a meaty heatsink. Geeze how many watts is this amp 1500W? into 8 ohms (P=I squared R = 15*15*8=1800 derated a bit to 1500). When your done, let volter try it out on his neighbor he can play jet takeoff sounds at actual volume :)

Don't forget to buy a silicone or mica insulator for that package size and some heatsink greese if you don't already have some. I'm sure you can find some other goody to buy to mitigate the shipping cost. Maybe a high output LED and driver. At $4 a pop, might as well get a pair of spares

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dacflyer
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Re: i need 2 transistors.

Post by dacflyer » Wed Jun 24, 2009 2:43 am

reloadron >> ya it is a big transistor. sometimes you see them in a green package..like the hulk..lol

haklesup >> you know of a site that would sell the transistors and led drivers ? :P
that might work for me.....

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