testing a 2sd1525 darlington ?

[mark krawczuk]

hi, any body know how to test a 2SD1525 darlington transistor , with a
digital multimeter ?
thanks,
mark k

 

[Phil Allison]

"mark krawczuk"

hi, any body know how to test a 2SD1525 darlington transistor , with a
digital multimeter ?

** See:

http://www2.toshiba.com/taec/components2/Datasheet_Sync//67/8086.pdf


See diagram called " Equivalent Circuit" .

With your DMM on ohms, testing from B to E in either direction should read
2100 ohms ( +/- 15%).

With your DMM on " diode test", the C- E diode should tests like any
silicon diode with a very high resistance ( Mohms) in the reverse direction.

If all that is OK, the devise is likely OK.

Unless you bought a fake.



........ Phil

 

[mark krawczuk]

hi, thanks, mine is buggered, it came outa a fan speed controller from a
car, in one test it measured something like 35 million ohms, and the otehr
way 7 million ohms.

any idea where i can get a replacement , dick smith and jaycar dont have
anything.
mark k


"Phil Allison" <philallison@tpg.com.au> wrote in message
news:5kbtc6F2v7ouU1@mid.individual.net...

"mark krawczuk"

hi, any body know how to test a 2SD1525 darlington transistor , with a
digital multimeter ?


** See:

http://www2.toshiba.com/taec/components2/Datasheet_Sync//67/8086.pdf


See diagram called " Equivalent Circuit" .

With your DMM on ohms, testing from B to E in either direction should read
2100 ohms ( +/- 15%).

With your DMM on " diode test", the C- E diode should tests like any
silicon diode with a very high resistance ( Mohms) in the reverse
direction.

If all that is OK, the devise is likely OK.

Unless you bought a fake.



....... Phil

 

[Phil Allison]

"mark krawczuk"

hi, thanks, mine is buggered, it came outa a fan speed controller from a
car, in one test it measured something like 35 million ohms, and the otehr
way 7 million ohms.

any idea where i can get a replacement , dick smith and jaycar dont have
anything.

** An auto wrecker - for another controller.

Not even Farnell have a similar part to the 2SD1525.




........ Phil

 

[Jonno]

Phil Allison wrote:

"mark krawczuk"

hi, thanks, mine is buggered, it came outa a fan speed controller from a
car, in one test it measured something like 35 million ohms, and the otehr
way 7 million ohms.

any idea where i can get a replacement , dick smith and jaycar dont have
anything.


** An auto wrecker - for another controller.

Not even Farnell have a similar part to the 2SD1525.




....... Phil




Set up a pair as a darlington configuration?