Sansui AU717 faulty transistors

[Heimrick214]

Hello guys,
I'm trying to replace 4 transistors on the phono section of my AU717. THey're
2SA906 (tr01,TRo2, TR05,TR06)

Anyone knows any replacement/substitute ?

thanks in advance

 

[ivandezande]

It's best to try to find answers before starting a thread.
It took me two seconds to Google "2SA906 Audiokarma" and find that KSA992 is the correct sub.

 

[Hyperion]

Or even within the AK site - just type '2SA906' in the search box and hit <return> - you get 33 hits to choose from.

 

[Heimrick214]

I saw the ksa992 sub but i'm confused by the fact that there's several variations of the KSA 992 (P, F, FA, etc)

 

[ivandezande]

I saw the ksa992 sub but i'm confused by the fact that there's several variations of the KSA 992 (P, F, FA, etc)

Read the datasheet. It's just mainly packaging differences, e.g. tape and reel, bulk, bent leg or straight.
The A/B is gain, I believe you'll be fine with ether depending on where they are located, for here I'd go with the higher gain.

 

[Heimrick214]

Classification of hFE
The KSA992 transistor might have a current gain anywhere between 200 and 800. The gain of the KSA992P will be in the range from 200 to 400, KSA992F ranges from 300 to 600, KSA992FA ranges from 300 to 470, KSA992FB ranges from 430 to 600, KSA992E ranges from 400 to 800.

 

[kevzep]

Classification of hFE
The KSA992 transistor might have a current gain anywhere between 200 and 800. The gain of the KSA992P will be in the range from 200 to 400, KSA992F ranges from 300 to 600, KSA992FA ranges from 300 to 470, KSA992FB ranges from 430 to 600, KSA992E ranges from 400 to 800.

Well, whats the gain of the 2SA906 on the data sheet? Just get whatever one is close to that....Easy...

 

[Heimrick214]

Thanks guys