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How many EEs know this basic thing?

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terrance:
A device can't reach multiple maximum ratings at the same time, and ratings have their conditions.

eg.
LM1117 ratings
800mA,
15V
TJ 125degC

Does not mean
1. It can work at 15V input and regulate 800mA output at the same time.
2. I can regulate 800mA at 125C ambient temperature
 

Andy Chee:
Isn’t that why we study the device data sheet’s “safe operating area” specification?

Sensorcat:
The "absolute maximum ratings" section of a semiconductor datasheet tells nothing about how to operate the device. It tells that you have to expect destruction if you exceed any of the limits. In order to find the limits for correct operation, you have to look at all the other sections. The tables usually specify the conditions for each specification value in one of the columns. There's no magic in this, the datasheets follow the same conventions industry-wide, but you must be familiar with the way specifications are given, otherwise: :-BROKE

Someone:
I see you've been working with similar colleagues to me. Even ignoring the footnotes and * against all the specifications.

Alex Eisenhut:
Also applies to scope probes. 600V at DC doesn't hold at 100s of KHz. Poof!

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