Opto coupler - B0832/8178

[Grossel]

Hi.

I just disassembled a sheap Nokia cellphone charger.

I found this little opto coupler that is printed on B0832 / 8178.

Is there any chance to get it's specs? I've searched on net for it but cannot find any relevant info.

I can always get it to function by testing, but I want it's specs.

It have four legs,rectangular shaped (about 8x5 mm I guess)


Thanks

 

[SABorn]

Sometimes the actual part number is printed on the underside of the chip (SMD). (got me buggered why)

So you might need to remove the chip from the board to find the actual part number.

Then i am hesitant to to say this in case you go to the trouble and find no number on the under side.

Pete.

 

[Nigel Goodwin]

I would suggest that more likely it's either an in-house number, or just a cheap Chinese component you can't identify.

 

[Grossel]

It was a cheap one, yes.

I don't think I would go for further dissasembling, as the regulator circuit actually works. But it's plastic housing was very poor. Maybe I can use the regulator to something

 

[tendi]

that opto coupler could be replaced by the pc817b...
regards.

 

[Grossel]

Thanks tendi