Which company is this?

[Nithin14]

Hello everyone,
Recently I bought some 2n3773 and 2n6609 power transistors for my audio amplifier, but I don't know the manufacturer's name.I wanted to know the company'name so that I can know their specifications,build quality and also the quality of their (company's ) products.If anyone knows then please inform here.
Thanks a million

 

[Mooly]

These are ancient devices and so widely available as 'generic' parts. If there is no manufacturer marking visible then you just have to assume they meet the specifications for those parts.

If there is only a number such as 2N3773 then they could be from anywhere. That doesn't mean they are no good, just that you can't identify them.

 

[wrenchone]

A picture would help a lot...

 

[Nithin14]

Sir,
I am not able to attach a picture, I am trying to post it since I created this thread.I don't know whether it is my browser's problem (I posted this using mobile ).
It's symbol is somewhat like this;
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A capital E but it is reverse with the topmost leg is shorter than the middle leg and the middle leg is shorter than the bottom leg.
After this symbol there is number written as"P15E" then it's part number 2n3773.
Hope you can understand.
Thank you.

 

[vzaichenko]

Hi,

The well-known manufacturers of those devices are ON and ST, as well as some other international brands.
The ones you've got are manufactured by Bharat Electronics Limited (BEL) - a large Indian corporation, the key customer - Indian Defence Forces.
Quality must be ok, I believe

Cheers,
Valery

 

[Nithin14]

This was the exact symbol on the transistor!!!!
Thank you very much

 

[wg_ski]

Curious as to how much you paid for them. When I see obsolete devices being made for the US military they are god-awful expensive - like $60 for a 2N3442 or 2N3715. Hope they (and you) are getting a better deal....

 

[Nithin14]

Yes, it. was pretty expensive, I purchased for Rupees 780($12), so I wanted to know the manufacturer hence this post.