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Same Diode Part # Different Specs.?

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LAN_403

jpsmith123

Fri Mar 30 2012, 02:59PM

Registered Member #1321 Joined: Sat Feb 16 2008, 03:22AM
Location:
Posts: 843

I was thinking about getting some of these diodes from OT Electronics:

But the Vfm spec of 80V is higher than I expected (and it unfortunately doesn't say at what current it's measured at) , and the IFSM of 20 A is lower than I expected.

So I did a little searching and found this spec sheet (apparently on the web site of a Chinese manufacturer):

The specs on this page show values for Vfm and IFSM of 48 V and 30 A, respectively, which sounds more reasonable to me.

I'm wondering, how could the same part number diode - 2CLG40KV/1A (or .../1.0A) - have two different sets of specifications? Could one of them just be a "misprint", or could manufacturers be playing fast and loose with the specs. here? Does anyone have any ideas about this?

Forty

Fri Mar 30 2012, 03:42PM

Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649

The first one is labeled as "maximum" forward voltage drop and the second just seems to be the voltage drop. So it could be that the second one is reporting the average value.

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