Hi All,

I'm trying to estimate the power dissipation in the Fairchild MDB8S bridge rectifier (https://www.fairchildsemi.com/datasheets/MD/MDB10S.pdf). The datasheet has a measured value for "dual dice" and "single dice". What does this mean?



Thanks,
John

 

Take a look here:
http://www.jedec.org/sites/default/files/docs/jesd51-12.pdf

 

The datasheet has a measured value for "dual dice" and "single dice". What does this mean?

It's not clear.
But if you are using it in a normal bridge configuration I would use the "dual dice" higher value for calculation purposes.

 

Dice is actually the plural of die. It refers to the raw silicon chip without the surrounding package. If I had to guess the bridge might be implemented on one die or two dice.

 

Dice is actually the plural of die. It refers to the raw silicon chip without the surrounding package. If I had to guess the bridge might be implemented on one die or two dice.

I would go with a "per die" specification and the rating for 2 die conducting at once - in normal operation; only 2 die should be conducting at once, so there's no reason for all 4 at once.

 

I would go with a "per die" specification and the rating for 2 die conducting at once - in normal operation; only 2 die should be conducting at once, so there's no reason for all 4 at once.

I'm not saying the usage is correct, I'm just commenting on the etymology of the word which was appropriated by the semiconductor industry from an entirely different environment.

 

I believe "dice" is a misuse and it should be "dies". Dice is only the plural of die when referring to the game cubes, not when talking about a mechanical mold.

 

I believe "dice" is a misuse and it should be "dies". Dice is only the plural of die when referring to the game cubes, not when talking about a mechanical mold.

It has been a matter of some dispute for nearly 45 years. Can't remember the last time it came up.

 

Thanks everyone. I'll go with the 250 C/W to be safe (although that really limits the amount of current I can source). Truth be told, this was really the wrong application for that part. Oh well. Learning from mistakes is the best way