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Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
based on the graph of Amps Vs. V sub f, I think its just a confusing part number. it looks like it can handle bookoo current, way more than 12 amps.
though if i recall, i believe 109 amps would approach the limit of 140 amps for the TO-247 case type. but thats theoretical, ive seen peeps go way higher with seemingly no problems.
Registered Member #72
Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
Why is there a 12A in the number? And it doesn't mean 12amps, but 109 amps.
are you serious?
Why is there a 12A in the number and it doesn't do 12A?
Why shouldn't it have a 12A in the number, and the 12A not mean 12 amps?
If they called a car a V6, would you ask why the why the battery didn't deliver 600mV?
Why shouldn't a type number mean what the manufacturer wants it to mean?
If you look at the bottom of the first page, it says "DSEI 60-12 on page D5-27". That's talking about a -12 part. So they add an "A" to the number. So what. Does A have to mean amps, when -12 didn't mean 12?
And BTW, on the bottom of the same page, they drop that while the silicon might take 109A, the package leads will take only 70A (A meaning Amps).
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
yes 70 amps is the limit for this package type, but at a partial Duty Cycle, it can go up beyoud that. also the I sub fav ---forward current average at 60 deg.C is 109 Amps, it drops to 75 amps on silicon above 90 deg.C ; with the caviat that the package is limited to 70 Amps, however ive seen way more pushed through a TO-247 with no consequence.
if your still iffy on this component, or want high reliability, then maybe choose another device or maker. maybe a mini-brick.
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