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Transistor

Cumbersome

Aug 27, 2023
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Hello everyone, i am new to this forum.

I have a question about transistor.
I found one blown in my espresso machine bes870 main board. And i cant find one to buy. Maybe i can use something different?
 

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Martaine2005

May 12, 2015
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Hi and welcome to maker.pro.
What reference designator is printed on the PCB for the transistor?. It might not be a transistor or it could be a BC319 transistor or similar.

Martin
 

Cumbersome

Aug 27, 2023
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Sorry it is TA4 and it is going ro solenoid valve.
 

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Martaine2005

May 12, 2015
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Hi, transistors are normally ‘Q’. It certainly doesn’t mean it isn’t a transistor. But the other component, TA2 is a Triac. TA4 could be a TO92 triac.
I’m honestly not sure. Let’s wait for more experienced members to chime in.

Martin
 

Bluejets

Oct 5, 2014
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I’m honestly not sure.
I'd say given the other triacs in the same locality and their markings, you are pretty much on the money.
Actual type...who knows, perhaps a oem number...again who knows...Op first shows TA3 and then TA4...????
Is the good one shown the same as the "blown one we do not see"...??
 
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