Is this a real TDA1541A? - Page 2 - diyAudio
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Old 20th April 2004, 10:44 AM   #11
weissi is offline weissi  Europe
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I think this chips were originally produced for Sony, etc.....
Ive seen some Sony Players with tda1541 inside, no one had the philips logo...
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Old 20th April 2004, 11:33 AM   #12
pop11 is offline pop11  Canada
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TDA1541 (non A) from Sony players:
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File Type: jpg 1541_01.jpg (18.9 KB, 4362 views)
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Old 20th April 2004, 11:35 AM   #13
pop11 is offline pop11  Canada
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more ...
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Old 20th April 2004, 04:36 PM   #14
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Well guys,

I have some at hand with prefix HHH and HBH but most of TDA1541A I have marked HSH like everybodys'.

The HHH one has been in my home for more than 15 years, so it is original. Where was this HHH produced? sounded excellent!!!

The HBH is from Germany, I believe is true one (coz from a famous huge distributor) but date coded 96???

Another chip which seems nobody mentioned before is marked NTE2057, if you check the dadasheet of NTE2057 you will find that NTE2057 is TDA1541 (A??).

NTE was once the Philips company in north America; so, is it possible the remarked one is from NTE.

Something starage, if you search and ask the availability of NTE2057 you will find that you still can get it now but the price is very high. What rank is NTE2057? TDA1541, A, R1, S1
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Old 20th April 2004, 05:01 PM   #15
Bricolo is offline Bricolo  France
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I'd say it's the non A version
http://www.nteinc.com/specs/2000to2099/pdf/nte2057.pdf


since the datasheet refers to an internal oscillator
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Old 22nd April 2004, 12:44 AM   #16
homer09 is offline homer09  Canada
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is the non A TDA1541 alot worse than the TDA1541A? what are the differences? i have a non A sitting in my philips cd650. which other ICs are good, so i could keep my eye on good buys?
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Old 25th April 2004, 03:14 PM   #17
HtP is offline HtP  Netherlands
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It is a development sample.

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Old 25th April 2004, 09:23 PM   #18
guido is offline guido  Netherlands
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hihihihi

Everybody gave their thoughts, but nobody thought of this possiblity

So you got a late TDA1541A
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Old 25th April 2004, 09:25 PM   #19
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A development sample from 1997 !? SAA7321 and/or SAA7350 ( or others, forgot the count with 1 bit chips really ) were in development then, isn't it ?

If I look at the pictures in post #1 and post #2 I see they are marked exactly the same except for the datecode which is 10 years later and the A, hence my suspicion about the datecode and genuinity. Also font and ink seems different. The same chip in post #2 in the lower right corner, what about that one ? Is that a development sample from 1987 then ? ( I suppose the 4182 code says it all ).
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Old 26th April 2004, 02:29 PM   #20
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