100W Ultimate Fidelity Amplifier

[asuslover]

2SA1837/2SC4793 are difficult to find , what's the best replacement for them ?
Thanks

 

[rsavas]

You could try
3CA1837
3DA4793
from
http://www.fsbrec.com/Eng/Product/search.html
distributed at
LCSC Electronic Components Online | Lcsc.com

let us know how they work out

 

[asuslover]

is this the Chinese clone of the Toshiba ones? i think i'll pass, better these ones :2SA1837L-TF3T Power Transistor -230V -1A | Profusion

 

[rsavas]

How are you sure that they are any better? an opinion or facts?

 

[prasi]

How about on-semi MJE's?

 

[asuslover]

How are you sure that they are any better? an opinion or facts?

Thanks for your suggestion .
Profusion sells them and it just looks more legit, at least for me. Sorry , I didn't mean to offend you.

MJE/Kse 340/350 I used in PeeCeeBee V4H , but I dont know if they are up to level of the Toshiba 2SA1837/2SC4793 .

 

[Dirttracker73]

Profusion in UK has them;
2SA1837L-TF3T Power Transistor -230V -1A | Profusion
2SC4793LB-TF3T Power Transistor 230V 1A | Profusion

 

[chat72]

I use mje15032/15033, they are wildly available.

 

[Dirttracker73]

Sorry, I can't read (post 12003)

 

[asuslover]

mje15034/15035 I used in P3A amp by mr. Rod Elliott.

 

[prasi]

Yes I was meaning MJE150XX series. those easily would be the rugged ones available today.

 

[sajti]

Another possible candidate is 2SC4883/2SA1859 from Digikey.

Sajti

 

[karachay]

thak you still4given

 

[asuslover]

Can anyone post a picture of an authentic pair of Toshiba 2SA1837/2SC4793?
Thanks

 

[bullittstang]

Can anyone post a picture of an authentic pair of Toshiba 2SA1837/2SC4793?
Thanks

These are ones I purchased 2-3 years ago - from China, but matched the 4 pair I previously bought from Mouser (compared after purchasing). I have used 3 pair of these Chinese one without any issues. So I am pretty sure they are originals.

 

[asuslover]

Thank you.

 

[sajti]

These are ones I purchased 2-3 years ago - from China, but matched the 4 pair I previously bought from Mouser (compared after purchasing). I have used 3 pair of these Chinese one without any issues. So I am pretty sure they are originals.

Looks quite original.
I can take a picture today evening too, as I have some original from Mouser.
Sajti

 

[apexaudio]

CA8

 

[bullittstang]

Looks quite original.
I can take a picture today evening too, as I have some original from Mouser.
Sajti

If you could post pics - would be great. Like to make sure mine are original.

 

[prasi]

XRK_971 had made a detailed comparison of original versus fake ones, some where in one of his threads.
Hope he can post his link.

regards
Prasi