Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Sorry, I took so long in getting back to you. The SKR 240/04 are both unsuitable.
If you look at the first table of the datasheet, there are Rows of V and columns with diodes pointing in different directions. SKN means that the anode is connected to the stud.
So, lets, look at SKR 240/04 vs SKN 100/08 (Original)
The peak reverse voltage is 1/2 of the original, but the current is more than double.
If these are on the mains then 240 * 1.414 = 339 is < 400 with some safety. The PRV or Peak Reverse Voltage would have to be > 339, so 400-600 is OK, where 600 is preferred.
It also looks like the suffix UNF is used for english studs, otherwise the studs are metric.
The Diode direction is the #1 issue. The thread size #2, unless you can re-tap. #3 is the current. #4 is reverse voltage
You should check the stud size.
If these diodes rectify the AC mains then 400 is the minimum. If they rectify a much lower voltage, then it's possible that the PRV was higher than it needed to be in the first place.
A schematic could be useful as well as the "specifications" of the charger. Current can be higher and PRV could be higher, but they could have been oversized to begin with due to availability.
I never test diodes using a DMM. Too unreliable!!
OP said:So, the PRV is Peak voltage on the datasheet not RMS voltage, correct?