testing a 2sd1525 darlington ?

"mark krawczuk"



**  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

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

"mark krawczuk"




**  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?