"japanese" Transistors To "european"

[MYLEY]

Hello.Does anybody know if there is a conversion table to convert "JAPANESE" transistors to "EUROPEAN".I have a Toyota radio from a Japanese import and need a surface mount transistor with the markings "BC QU".

[dnsey]

There always used to be 'equivalents books', but I don't know if there are any covering SM devices. Just look up the parameters, and find a match via data sheets.

[MYLEY]

Thanks.I have tried entering markings on various sites to identify the component,but to no avail.I have also contacted Nikko-Electronics but they to are unaware of such a component,as are CPC.I wonder if the markings,BC QU,is a code used by Sony,or in this case, Fujitsu Ten?I have noticed that Sony tend to use components with similar markings,does anybody know what the markings refer to?Thanks.

[AndrewT]

Hi,
I believe the two and three digit numbers are simply manufacturer codes, probably intended for mass production.

Since most will be buying on a 5000 reel the code just confirms that they have the labelled reel correctly loaded on the assembly machine.

I would not expect these codes to be unique, there are just too few digits.

You will need the manufaturer and chip name to identify the type.

[Onra]

Hi,
Do you have a picture available (with readable marking, if possible)?
Same marking may be used for different devices in different packages.
Without package size you´ll hardly find the corrct device.
Onra