Median Transistor Orientation

[joelorigo]

I bought these 2N5457 transistors from Aion Fx for the Median I am building:

https://aionfx.com/component/2n5457-jfet/

How do I know the orientation of the D S G leads?

 

[jimilee]

I bought these 2N5457 transistors from Aion Fx for the Median I am building:

https://aionfx.com/component/2n5457-jfet/

How do I know the orientation of the D S G leads?

Google 2n5457 pinout.

 

[joelorigo]

OK, I see that. How do I know if the pads on the PCB are D S G or G S D? I am assuming S is in the middle either way.

 

[jimilee]

OK, I see that. How do I know if the pads on the PCB are D S G or G S D? I am assuming S is in the middle either way.

If I’m not mistaken, the letters face the flat side of the transistor on the silkscreen. The other way would be the schematic.

 

[joelorigo]

I didn't see them printed on the PCB. I do see in the schematic the 1 2 3 for the transistors but I don't understand how that translates to the 3 pads.

 

[hamerfan]

123 or DSG left to right, if i am not mistaken.

 

[joelorigo]

Thanks guys I will try that.

Just wondering how looking at the schematic tells what the pads are though for future builds.

 

[micmac]

The source is normally pointing down and the drain is pointing up in a schematic. And when the gate arrow is pointing towards another leg and not in the middle, like in the pic above, it's always pointing to the source.

 

[jwin615]

Thanks guys I will try that.

Just wondering how looking at the schematic tells what the pads are though for future builds.

Use you DMM