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Who can help me identify this transistor?

It came out of a Chinese micromotor power supply.

Text on top is "D1047 905".

https://www.dropbox.com/s/r0ib8ikionm7ctu/Photo%20Aug%2022%2C%2010%2055%2028%20AM%20%28HDR%29.jpg

Can I substitute it with other transistor?

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Here is a datasheet for a 2SD1047, which will almost certainly be for this device.

Searching for "D1047 datasheet" finds a few more similar datasheets, it's a NPN power transistor. Certainly replaceable with a similar component from e.g. Farnell, Digikey, etc - they will have many options.

Of course, you can always order an exact replacement if you should wish.

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  • \$\begingroup\$ Even the angled top of the plastic part of the tab is right... Yup, looks like it all right. \$\endgroup\$ Aug 22 '13 at 15:27
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Pinout and spec sheet - NPN 140V, 12A

enter image description here

enter image description here

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