Found a couple of "LM1875T"

[mondogenerator]

Great advices Daniel!
UTC is selling indeed 2030and 2050 chips, but are certain that those chips are on par with the ST authentic tda2030/2050 chips?
I would stick with the real ti lm1875 chips which are still available to purchase from the trusting etailers.

UTC chips and transistors are absolutely fine....
Not fake, not poor quality, just generics.

But if TI still sell the LM1875 then fine.

I have a feeling TI might bring back other things, since there is demand enough for legitimate Asian companies to acquire the rights to older devices and produce them to service a demand TI/ST etc did not think enough for them to sustain profitability.

 

[chermann]

Hi

we discussed these topic in this thread years ago:
1875 mono

as far as i tried the utc 2050 (reichelt 1 Euro) sounds not bad and is not technical identical with ST.
max +/-25V supply. so not as googd for 8R speakers as LM1875 (+/-30V) or original ST 2050.

kr
chris

 

[NanoFarad]

LM1875 is a current limited amplifier, tda2050 or utc2050 is a much better audio IC. It is already proven.

 

[Bare]

LM1875 is a current limited amplifier, tda2050 or utc2050 is a much better audio IC. It is already proven.

That's Your opinion

 

[NanoFarad]

That's Your opinion

This is fact, not only my opinion!

 

[NanoFarad]

8ohm load test. Still lm1875 failed to beat tda2050. Sadly ST tda2050 is now discontinued

 

[JMFahey]

8ohm load test. Still lm1875 failed to beat tda2050. Sadly ST tda2050 is now discontinued

Simulation is fine but nothing beats actual testing

 

[NanoFarad]

Definitely I like National too but here ST wins! It was a very rugged 5 pin chipamp, almost indestructible! I miss my walkman too...

 

[godslayer]

8ohm load test. Still lm1875 failed to beat tda2050. Sadly ST tda2050 is now discontinued

I am unable to find st chips in local market in delhi anymore. The dealers say 60 rupees (1 usd) price makes it prohibitive to be bought by users.

I got some nanotech 1875 with me now but they don't seem to be real as they have a slight cut on their casing sides unlike the ones posted by others in the group.


@NareshBrd has some good experience with these chip amps. He knows them well.

Only genuine chip i can find in the market is tda7294 and i stocked up 10 of these for my future pursuits 🥰

 

[NareshBrd]

Get CRC-Micro (Triangle) 2050 or 1875, run at 18 to 20V, big heat sink.
Very popular here, 20 Rupees price range.
Or see UTC version of 2050, about 60 Rupees in Old Lajpat Rai Market in Delhi.
Said to be good version, stay below 24V for good performance.