Pin config for IRF9540N

rob998

New Member
Hi,

I'm new to electronics and I'm trying to build Jurjen Kranenborgs two-wire serial network.

I've search everywhere and checked out the datasheets but haven't been able to work out the pins for the IRF9540N MosFET. The datasheets show that looking at the device from the front, the pins are 1,2,3 from left to right but doesn't say which is the drain, source and ground.

Is there a standard for T0-220 mosFETs?

Thanks
Rob
 

Dippy

Moderator
It DOES say on the IR Data Sheet I looked at.
Look at last page section "Package Outline"
Look at the picture TO220AB, then see to the right is a little listing.
Seek and ye shall find.......

http://www.farnell.com/datasheets/13138.pdf

PS. And you'll notice that the Tab is marked 4 , so don't forget that it ain't isolated when stuffing into breadboard.
 
Last edited:

rob998

New Member
Hi Dippy,

I must have looked at that datasheet ten times and didn't see that bit. I could have the circuit up and running by now if I had seen that a couple of hours ago.

Thanks for the quick reply.
 

Dippy

Moderator
No probs.
Data Sheet could have been better written, but the author is probably only on £50K a year so what can we expect.
 
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