LT3045, LT3045-1, LT3094 - difference between grades E vs I?

Question

Hello, 
 May I ask what differences there are between the E and I grades of the LDOs in the subject? I believe these letters normally refer to different temperature ranges, but for these ICs the datasheets specify the same ranges for these grades. However, there appears to be a considerable difference between their prices. What am I missing? If the grade letters have some formal definition somewhere, could someone point me to it, please? (My Google searches didn't turn up anything relevant.)

ACaldejon · Accepted Answer

Hi, 
 For LT3045/LT3045-1 , Please refer to page5 of both the datasheets and see NOTE9. https://www.analog.com/media/en/technical-documentation/data-sheets/3045fa.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/30451fa.pdf 
 For LT3094 , please refer to page 6 and NOTE3 of the datasheet, https://www.analog.com/media/en/technical-documentation/data-sheets/LT3094.pdf 
 There you can see the difference of E-grades and I-Grades, and also the H-grades. 
 So basically, E-grades and I-grades have different prices since the latter requires and goes through more testing for the design. 
 regards, Ash)

gkronome · Answer

Thanks for the answer! These notes eluded me.

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LT3045, LT3045-1, LT3094 - difference between grades E vs I?