Diodes

[Joebudd]

I have a component question. I am repairing a generator. I have 2 diodes bad. rectifier diodes. Stud type. I have 2 of the same generators, different years. They look identical. Now I pull out the diodes. Try to look up the numbers and don't find much. From what I did find, it appears to be a 20a 600v cathode case diode. Will it be alright if I get a stud diode with the correct amps, voltage, and negative case. Here are the numbers I have off the diode MSC 9118 R2160.
Thanks for the help.

 

[Martaine2005]

Cathode is negative for a diode.

Martin

 

[Joebudd]

I know that. The case is the cathode. The lead out the top is the anode.

 

[bertus]

Hello,

Do you mean this diode:
https://www.arrow.com/en/products/r2160/microsemi

Bertus

 

[Joebudd]

Looks like the unit. Thanks

 

[duke37]

Diodes of this style are made in both polarities often with the same number but one polarity has a R added. So be careful you get it right.

600V 20A diodes should be readily available, Depending on the reason for failier, you could use stronger diodes.

 

[Bluejets]

According to the spec sheet, as Martaine and Duke pointed out (R) is Anode case and (S) is cathode case.
As you quoted R2160, then that is Anode case.

 

[Joebudd]

Yes I just noticed that. I stand corrected. The R is for reversed and S for standard. I will make sure I check it with my tester and it matches the other ones. Thanks again.

 

[Joebudd]

I stand corrected.

 

[duke37]

If you are changing the type then watch the thread, they may be unf or metric. Get with nuts and washers that fit.