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-40degC to +125degC version of opamp?

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Hi,

If I need to know this, then
* First I´d read the datasheet
* then I´d go to the manufacturer´s internet sites.

Klaus
 
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Consumer products are not used at the extremely high temperature of 125 degrees C. Years ago ICs were made for spacecrafts and used a ceramic DIL case but I haven't seen the case lately.
The lousy old 741 opamp is 48 years old and its datasheet shows the ceramic package and the wide temperature range.
 
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It's quite likely the device will be suitable, but very unlikely that
the manufacturer will undertake to rate it there (needing a whole
new round of capability and qualification work, for a trivial market
compared to the industrial temp range).

Now, industry segments such as down-hole live by characterizing
parts for environments that were unintended and unsupported.
Taking MIL or industrial temp range piece-parts out to 200-300C.
They hold that knowledge as stock-in-trade. You could do the
same.

But if you want a certificate and a bow on it, from somebody
else doing the work, good luck.

I'd begin with the "existence proof" and work forward to sample
size and reliability (although accelerating a part you want to
use at 125C, when it's in standard plastic packaging, may be
a bit stanky....).

Things to beware are latchup (exacerbated at high temp), and
the usual wearout mechanisms (TDDB, EM). If you can stand a
less-than-rated service life (like downhole instruments generally)
then these may not kill you. But you might undertake to perrform
some pin electrical latchup testing at temp (plus margin) to set
any special design reliability guidelines.
 
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I've an acquaintance that has designed downhole telemetry systems for the oil and gas industry.

He performs oven characterizations for critical components, but has never told me exactly what parameters he monitors.
Anyway, only one out of three boards pass the grade.

Even then, service life is measured in weeks.
 
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To refer more closely to the original question, as you already know there's no -40..125°C version of LM6142, but there are some OPs from TI with similar data and extended temperature range. You have to search them yourself because we don't know your exact specification.
 

Automotive grade components has operating temperature range from -40 degC to +125 degC, as the ambient temperature experienced by the components if used in engine compartment of the vehicle can go up to 125 degC.
Military grade components have even wider temperature range... starting from -50 degC to +125 degC.

LM6142 may have wider temperature range.
"If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications." is mentioned. is mentioned in the datasheet.
 

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