Transistor help

Aug 21, 2006 4 Replies
I

Hello,



I have a home irrigation controller hat has gone faulty on one of the zones, I have opened it up and have found one of the transistors to be faulty there is a number on the transistor but it looks like its a part number from the manufacturer of the irrigation unit rather then the actual part number of the transistor.



The number written on it is 1401ES or 1401E5 cant make out if its a 5 or an S but looks like an S to me and sound like it might be an NPN transistor.



The purpose of this transiston from what I can tell from the board is to turn a solenoid on and off.



The Irrigation unit is made by Holman Distributors.



Any help you can provide would be greatly appreciated.



Thanks Imran Khan


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L

"Imran" wrote in news: snipped-for-privacy@corp.supernews.com:

It feels like an honour to be talking to anyone with the name Imran Khan. :)

About the transistor, my guess is it might not be very critical which part you use, as it's being used as a simple switch. If you can get the polarity and value of voltages and currents required of it, you can probably choose a replacement less likely to fail the same way. I doubt the gain is very critical, but choose a few likely options then pick one of the high gain ones to use.

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I

LOL I have spent all my life being compared to him questions like do you play cricket, are you running for parliment etc. Was the happiest day for me when he retired caause i thought that would be the end of it but no his legacy still lives on and haunts me.

Thanks for the info on the transistor now I have to find my multi tester and try and remember how to use it LOL.

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I

AFICR 1401 is a generic type number but I can't remember which data lists I've seen it in, try googling with a prefix like SS or JE.

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L

What type of package does the part have? TO-220?

RL

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