# Lm308

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#### Shane Kirkman

Jan 1, 1970
0
DickSmith dosent seem too have a Lm308 or 108. Is there something simiar I
could use.
--

Eat-Drink-Smoke and be Happy.
Shane.

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#### Michael Black

Jan 1, 1970
0
Shane Kirkman" ([email protected]) said:
DickSmith dosent seem too have a Lm308 or 108. Is there something simiar I
could use.

It's thirty years old which would explain it not being in the catalog.
It also was never commonly used in hobby circles, except if you
really needed it's capabilities.

It's real claim to fame was really low input current, 10 times
that of an FET input op-amp according to the National datasheet from
the time. So when you saw them, they'd be in DC applications where
offset would be problematic.

It helps if you'd specify what it's being used for. If for some reason
it's an AC application, replacement is probably very easy. If it's
DC, finding a replacement may be more of a problem. But then, op-amps
have gotten better since then. You'd need to be looking at specs,
and comparing.

Michael

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#### Shane Kirkman

Jan 1, 1970
0
Its for a digital thermometer

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#### CFoley1064

Jan 1, 1970
0
DickSmith dosent seem too have a Lm308 or 108. Is there something simiar I
could use.

Farnell is in Australia, they accept credit cards, and they have the LM308H and
LM308AH in stock. I believe they take plastic.

Order Code 398433 LM308AH $10.64 Order Code 398470 LM308H$4.94

Digi-Key (a U.S. outfit) has the LM308AN (8-pin DIP pkg), LM308H and LM308AH
(TO-99 can) for $1.75 to$3.60 USD. International orders have a \$6.00 USD
surcharge added to the order, plus shipping is somewhat more. They also have a
minimum order restriction.

www.digikey.com

The LM308 is a 1970's vintage op amp, SOTA for its time. Unless you can