Electronics > Projects, Designs, and Technical Stuff
What to do with a huge-ass TRIAC?
<< < (3/3)
technix:

--- Quote from: capt bullshot on November 01, 2018, 01:51:55 pm ---
--- Quote from: technix on November 01, 2018, 01:41:10 pm ---What is the ratings on that one? Megawatt scale?

--- End quote ---
http://ixapps.ixys.com/datasheet/mcd200-16io1.pdf
216A DC continuous / 1600V, 8kA surge. More interesting for capacitor discharging is the I2t value, this gives you some hint how much energy this thing can absorb in a single pulse. Sometimes a limit for "explosive disintegration" is specified  8)
 At best a "medium size" for real power electronics ... Might be used for the line rectifier of a 300kW inverter / VFD.

--- End quote ---
How to understand that I2t value?
capt bullshot:

--- Quote from: technix on November 01, 2018, 01:57:32 pm ---How to understand that I2t value?

--- End quote ---
Same as for fuses. We call it "Schmelzintegral" in German, it's the integral of current² over time flowing through the device. If the specified value is exceeded in a single pulse / short enough time, the device fails / the fuse trips.
Usually the I²t for fuses is larger than for (comparable) semiconductors, so the semiconductor device protects the fuse. The fuse is still there, to limit collateral damage.
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod