neutral wire on my diode?

[The Baron]

Hey there, i am playing around with my S06J(I have yet to get its host so far) and i have no idea what the white(neutral?) wire is for. Can you guys tell me?

 

[Rewkie]

It's the case pin wire. (not used)

 

[The Baron]

What is it supposed to be used for?

 

[Cyparagon]

Since the return path of the battery current is often the case itself, it sometimes makes things simpler to tie the return path to the diode's neutral pin which forms a conductive path back to the battery. It's just for convenience for some applications - it is NOT connected to any active element inside the case itself.

 

[The Baron]

Why wouldnt you do that with the negative pin instead?

 

[Cyparagon]

The negative pin is not connected to the diode case. The battery negative needs a case return.

Besides, diode negative and battery negative are not always at the same electrical potential.

 

[The Baron]

Im confused now; if the negative end of the battery is on the spring, where would you complete the circuit? The negative of the driver? Sorry but I am really confused right now