….In a brand new equipment. A three phase motorized-VARIAC, AC voltage regulator.

It has one of these for each phase. It is used as a comparator to drive, via a TIP41 and TIP42, the VARIAC’s motor.

What I find odd, is a “Texas Instrument” linear IC with the UA prefix.
Fake?
EDIT: Wbahn corrected me, TI does use the UA prefix.

 

What's odd about a TI linear IC with a UA prefix?

https://www.ti.com/lit/ds/symlink/ua741.pdf?ts=1711499340998

See addendum page 1.

Now, it might still be fake. The quality of the print might raise an eyebrow, but I don't know what the quality of the legitimate device markings from TI are these days.

 

What's odd about a TI linear IC with a UA prefix?

https://www.ti.com/lit/ds/symlink/ua741.pdf?ts=1711499340998

See addendum page 1.

Now, it might still be fake. The quality of the print might raise an eyebrow, but I don't know what the quality of the legitimate device markings from TI are these days.

UA741 is an opamp, originally labeled µA741 by Fairchild, for which TI was or maybe still is a 2nd source. It is certainly not a TIP-41 in that package.

 

UA741 is an opamp, originally labeled µA741 by Fairchild, for which TI was or maybe still is a 2nd source. It is certainly not a TIP-41 in that package.

As shown in the Addendum page I referred to, it is still an active TI part.

Who's thinking it's a TIP-41?

 

Hmmmm
I was under the (incorrect) impression that TI would have used the LM prefix.
Anyway, the point in my post was that over 50 years after its introduction, the 741 is still found in commercial products.

 

LM, DM, LH, DH were prefixes of National Semiconductor, I believe.

 

Which TI acquired.
And still uses National’s prefixes on many products.

 

LM, DM, LH, DH were prefixes of National Semiconductor, I believe.

National Semiconductor was acquired by TI in 2011.

 

As shown in the Addendum page I referred to, it is still an active TI part.

Who's thinking it's a TIP-41?

I was reading the original post too fast.