Semiconductor temperature range

[hithesh123]

Guys, what is the difference between a commercial grade IC and an Industrial grade IC.
Industrial works at a wider temperature range. I am not asking about that.
What is it that you change inside the chip that makes it work at higher temperature ranges?

 

[lostinxlation]

Passing the timing at higher temperature.

 

[hithesh123]

Passing the timing at higher temperature.

How exactly is that done?
Is it by changing the process or design or something else?

 

[lostinxlation]

How exactly is that done?

The same way as you do for the timing optimization.

 

[hithesh123]

The same way as you do for the timing optimization.

can you elaborate please.

 

[klystron]

The industrial grade ic package is ceramic ; that gives better thermal specification than the plastic commercial grade

 

[allanvv]

Really? You're saying all industrial temperature rated chips are ceramic packaged instead of plastic?

I believe it's just a matter of binning. All the chips are made and packaged in exactly the same way. The ones that are sold as industrial simply were able to meet the specs at the extended temperature range. Maybe some chips that were tested good for industrial temperatures are sold as commercial, due to more demand for those. It works the same way for CPUs and their clock speeds for example.

 

[girishbabu123]

In simple words ...

- Industrial IC need to work at a higher tempteraure
- As temperature increases transisters become slow
- So in order to achieve the tragetted frequency of operation , an Industrial IC uses bigger transisters which are faster
- commercial IC needs smaller transistors

This is simple explanation for understanding of a biginner