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Offline NivagSwerdnaTopic starter

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Mystery Components
« on: January 05, 2018, 11:53:07 am »
I'm looking at a schematic that has FDN310P (replaceable by A1HSB)... it appears to be a 5V logic level P channel mosfet...

But...  Why doesn't a FDN310P datasheet appear in a google search?  A1HSB likewise?
« Last Edit: January 05, 2018, 12:08:47 pm by NivagSwerdna »
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Offline Nusa

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Re: Mystery Components
« Reply #1 on: January 05, 2018, 02:08:38 pm »
Probably because someone misread it when they copied FDN340P off some other arduino board schematics.
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Offline NivagSwerdnaTopic starter

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Re: Mystery Components
« Reply #2 on: January 05, 2018, 02:32:45 pm »
Quote from: Nusa on January 05, 2018, 02:08:38 pm
Probably because someone misread it when they copied FDN340P off some other arduino board schematics.
:)

The actual device seems to have A1sHB markings. SI2301DS ?
« Last Edit: January 05, 2018, 02:40:26 pm by NivagSwerdna »
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Offline Inverted18650

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Re: Mystery Components
« Reply #3 on: January 05, 2018, 03:50:56 pm »
I checked LCSC and found this:

https://lcsc.com/search?q=a1shb

The datasheet for it is mostly Chinese:

https://datasheet.lcsc.com/szlcsc/A1SHB-SI2301_C86773.pdf
« Last Edit: January 05, 2018, 03:53:08 pm by Inverted18650 »
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Offline Zero999

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Re: Mystery Components
« Reply #4 on: January 05, 2018, 11:48:10 pm »
Why do you want to know? Are you building that circuit or repairing it?

There's nothing special about that MOSFET. Just choose something which has a maximum drain-source voltage of over 7V, can pass >500mA with a gate voltage of 5V and negligible voltage drop.

I've just had a quick look through Mouser and found: NTR3A052PZ PMV65XP & PMV30XPEA. There are many more.
http://www.mouser.com/ds/2/308/NTR3A052PZ-D-1219532.pdf
http://www.mouser.com/ds/2/302/PMV65XP-1146549.pdf
http://www.mouser.com/ds/2/302/PMV30XPEA-1151648.pdf
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Offline NivagSwerdnaTopic starter

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Re: Mystery Components
« Reply #5 on: January 06, 2018, 07:01:06 pm »
Quote from: Hero999 on January 05, 2018, 11:48:10 pm
Why do you want to know? Are you building that circuit or repairing it?
Neither. I have some of them left over which I previously gutted for the processor etc (a very cheap way to get a collection of parts) and I need a high side load switch... and that PFet looks perfect.
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Offline Inverted18650

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Re: Mystery Components
« Reply #6 on: January 06, 2018, 07:26:09 pm »
I gather a lot of parts in the exact same fashion. Lately I've been checking eBay for "scrap circuit boards" and the like and have found some great chips.
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