Please help identifying a SMD chip "1025 0F1"

Oct 26, 2005 3 Replies

Hi,



On a hard disk mount, there is a chip which, I guess, acts as a switch to turn on and off the power supply to the hard disk drive depending on a keyswitch's position.



However, the chip seems to have been fried by plugging in a ribbon cable with slightly disaligned contacts. As this has happened on four such boards before the error was found and corrected, it would be nice to replace the defective components.



I have had no success in identifying those ICs, though - searching for the identification printed on the chip ("1025 0F1", as far as I can tell) did not yield any relevant information. The board itself is designated "MR0ATA100PB", but I did not see even one google hit on this.



Does anyone have an idea what this might be, and where I can get a replacement in small quantities? This would fit into the hard disk mount much better than replacing it with discrete components...



In case it helps, I have put photos of the chip and the surroundings onto a web page at

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Thanks for any hints, Thiemo


Query a PGP key server (e.g. http://www.pgp.net/) for my public key 41068629. Strange sender address? Please see http://www.thiemo.net/misc/list-mail.shtml

It might be a "hot swap switch," made for shutting down drives in overcurrent conditions or on demand. Do you know where the rest of the pins go?

On 26 Oct 2005 22:42:44 GMT, Thiemo Nordenholz put finger to keyboard and composed:

Could it be a dual P channel MOSFET?

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-- Franc Zabkar

Please remove one 'i' from my address when replying by email.

This looks very sensible, judging from the pinout... Thank you very much!

Best wishes, Thiemo

Query a PGP key server (e.g. http://www.pgp.net/) for my public key 41068629. Strange sender address? Please see http://www.thiemo.net/misc/list-mail.shtml

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