Transistor Code Marking/Logo S Over H, What Brand?

[NagysAudio]

I need to find out the manufacturer of a transistor that has a marking/logo which looks like an S over H. Any ideas? Thanks for the help!

 

[Mooly]

Fujitsu maybe, post a picture or draw it 🙂

Semiconductor Identification Logos Page 1

 

[infinia]

Siemens.

 

[jan.didden]

Siemens.

Yes, probably. Siemens came from a company called Siemens & Halske.
They used to have the intertwined S and H logo.

jan didden

 

[NagysAudio]

This is for a dual jfet 2N5566. Did Siemens ever make such a transistor?

 

[jaycee]

http://www.siemens.cz/siemjetstorage/files/36332_logo.gif

 

[tommy1000]

JFET

This is for a dual jfet 2N5566. Did Siemens ever make such a transistor?

Hi Norbert,

I have a list of manufacturers of the 2N5566 JFET dated back to 1988.
I don't want to put it out on display in the forum.
Siemens and Motorola is not listed as manufacturers of this JFET.

 

[NagysAudio]

Jaycee - That is exactly the marking on this 2N5566 jfet!

Tommy1000 - Thanks! The jfets in question are dated from 1988 and they have the Siemens' symbol as in Jaycees post...

 

[jan.didden]

Jaycee - That is exactly the marking on this 2N5566 jfet!

Tommy1000 - Thanks! The jfets in question are dated from 1988 and they have the Siemens' symbol as in Jaycees post...

Which one - Jaycee's post has 6 markings...
Is it a Siemens/Halske one?

jan didden

 

[QSerraTico_Tico]

Which one - Jaycee's post has 6 markings...
Is it a Siemens/Halske one?

jan didden

I see only one type of H-S symbol!

 

[NagysAudio]

It is the very first one in Jaycee's picture. Just the S over H, with nothing else.

 

[jan.didden]

I see only one type of H-S symbol!

Me too - so?

jan didden