537BSY transistor?

[Wouter Visser]

I'm repairing an philips oscilloscope and identified a defect pnp
transistor. It's listed as a '536bsy' type in the manual and is in a
SOT23 package labeled "B3". I can't get any more information on it.
Googling doesn't help. Can anyone suggest an modern equivalent or help
me find the specs?

Thanks in advance,

Wouter.

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[Michael A. Terrell]

Wouter Visser wrote:

I'm repairing an philips oscilloscope and identified a defect pnp
transistor. It's listed as a '536bsy' type in the manual and is in a
SOT23 package labeled "B3". I can't get any more information on it.
Googling doesn't help. Can anyone suggest an modern equivalent or help
me find the specs?

Thanks in advance,

Wouter.

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Remove spam food from adress before replying

Have you looked here?
http://www.marsport.demon.co.uk/smd/mainframe.htm
--
8 days!


Michael A. Terrell
Central Florida

 

[Wouter Visser]

"Michael A. Terrell" wrote:

Wouter Visser wrote:

I'm repairing an philips oscilloscope and identified a defect pnp
transistor. It's listed as a '536bsy' type in the manual and is in a
SOT23 package labeled "B3". I can't get any more information on it.
Googling doesn't help. Can anyone suggest an modern equivalent or help
me find the specs?


Have you looked here?
http://www.marsport.demon.co.uk/smd/mainframe.htm

Yep, no luck.

Wouter.

 

[Peter Lowrie]

Wouter Visser wrote:

"Michael A. Terrell" wrote:

Wouter Visser wrote:

I'm repairing an philips oscilloscope and identified a defect pnp
transistor. It's listed as a '536bsy' type in the manual and is in a
SOT23 package labeled "B3". I can't get any more information on it.
Googling doesn't help. Can anyone suggest an modern equivalent or help
me find the specs?


Have you looked here?
http://www.marsport.demon.co.uk/smd/mainframe.htm

Yep, no luck.

Wouter.

Could it be a 2sb537 or equiv?

--
Peter E. Lowrie
----------------------------------------------------------

 

[Watson A.Name - "Watt Sun]

In article <3FE090C8.99F791A5@earthlink.net>,
mike.terrell@earthlink.net mentioned...

Wouter Visser wrote:

I'm repairing an philips oscilloscope and identified a defect pnp
transistor. It's listed as a '536bsy' type in the manual and is in a
SOT23 package labeled "B3". I can't get any more information on it.
Googling doesn't help. Can anyone suggest an modern equivalent or help
me find the specs?

Thanks in advance,

Wouter.

The BSY seems like it should be before the numbers, not after. It
would make more sense if it was BSY537. That number came up with
nothing on Google, but BSY53 came up with this (yes, I see that it's
in a different package):
http://www.electronicpool.de/list/index_B_S_BSY53_.html
So keep on searching, and best of success/luck.

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[Wouter Visser]

Peter Lowrie wrote:

Wouter Visser wrote:

Wouter Visser wrote:

I'm repairing an philips oscilloscope and identified a defect pnp
transistor. It's listed as a '536bsy' type in the manual and is in a
SOT23 package labeled "B3". I can't get any more information on it.
Googling doesn't help. Can anyone suggest an modern equivalent or help
me find the specs?

Could it be a 2sb537 or equiv?

Unlikely, given the circuit that it is used in. 2sb537 is a power transistor,
and
the '537bsy' in the scope would only have to handle 10mA or so as far as I can
see,
at frequencies up to around 50 MHz.

It really puzzles me why this particular type of transistor has been
used in this subcircuit of the scope, while other (more common) types have
been used
everywhere else.

Wouter.