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ZPA .5 cooling fan board help required

Posted: Sun Dec 03, 2017 6:40 pm
by Virtue
Hi. Is there anyone who knows the part number of the transistors in these locations? Q34 and 35. Q20 and 21. On the cooling fan board in a Zpa .5
Thanks!

Re: ZPA .5 cooling fan board help required

Posted: Wed Dec 06, 2017 9:46 am
by Silverhorse
Hi Virtue

Q34 & Q35: the part has the mark "ZTX749" on it. Maybe other ZPA's have other parts?

its a PNP transistor 25V -2A TO-92

link:
http://datasheetz.com/data/Discrete%20S ... heetz.html

are you sure that these are broken?

Re: ZPA .5 cooling fan board help required

Posted: Wed Dec 06, 2017 9:50 am
by Silverhorse
Mouser part number: 522-ZTX749

Re: ZPA .5 cooling fan board help required

Posted: Wed Dec 06, 2017 10:16 am
by Silverhorse
Q21: NPN transistor 120V 0.05A 3PIN SPT

Digikey part: 2SC2389STPS-ND

Q20: PNP transistor 120V 0.05A SPT3

Digikey Part: 2SA1038STPS-ND

Re: ZPA .5 cooling fan board help required

Posted: Thu Dec 07, 2017 10:27 pm
by Virtue
Sweet. Thank you very much!