Toshiba 2SA1837, are these good?

[spiggs]

Purchased these 2SA1837 from Littlediode but they look a little rough. Are they worth using? Are they real? How do I tell?

 

[RM]

I really can`t tell just by looking, but what I can tell is that Littlediode in my opinion is a trustable company to deal with.

Some years ago I bought a few 2SJ109s who turned out to be 2SA1349. They share the same housing so are often "rebranded".
Upon my complaint they shipped me new and tested 2SJ109. No quibble at all.

Regards
Roar

 

[spiggs]

I really can`t tell just by looking, but what I can tell is that Littlediode in my opinion is a trustable company to deal with.

Some years ago I bought a few 2SJ109s who turned out to be 2SA1349. They share the same housing so are often "rebranded".
Upon my complaint they shipped me new and tested 2SJ109. No quibble at all.

Regards
Roar

Good to hear they stand by their sales. I would not have thought anything except that they don't look new. If you zoom into the picture you can see the legs seem to have a bit of solder on them. After some research online and all the stories of fake components in general I just don't know if I should trust these. I am new to this whole world of electronics.

 

[grimberg]

Unisonic Technologies currently produces 2SA1837 and its complimentary 2SC4793. I have purchased and used them and, in the circuit, cannot tell the difference from the channel with the original Toshibas.

2SA1837L-TF3T - Power Transistor -230V -1A

2SC4793LB-TF3T - Power Transistor 230V 1A

 

[xrk971]

Here are some descriptions of genuines.

Aksa Lender HPA

Spiggs,
Yours look to be genuine!
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