Interestingly Unisonic in Taiwan carry a datasheet (Looking suspiciously TI/NS - esque) for their version of TDA2050....
http://www.unisonic.com.tw/product2.asp?BClass=114
I see no indication of them discontinuing it....
Also if there is different silicon fabrication going on maybe this accounts for parts with differing dies.
However I doubt very much they are the ones trying to pass their parts off as genuine ST ones.
http://www.unisonic.com.tw/product2.asp?BClass=114
I see no indication of them discontinuing it....
Also if there is different silicon fabrication going on maybe this accounts for parts with differing dies.
However I doubt very much they are the ones trying to pass their parts off as genuine ST ones.
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a few watts more power.
and there is allso a 2052, that has mute and standby functions. and even moooar powa.
and there is allso a 2052, that has mute and standby functions. and even moooar powa.
Tda2051 was rated 40w and tda2050 was rated 32w.
Thanks Arty, tda2052 has more pins too.
But do you know a good source for tda2052?
Thanks Arty, tda2052 has more pins too.
But do you know a good source for tda2052?
Did you ever buy any of these chips from this etailer? I would be curious about some pictures. Thanks
Not these particular chips, but others, along with a host of other bits and pieces. I have used the seller for decades. He is the last independant electronic components specialist standing in London! ("Craplin" hardly counts....)
Looks legit to me. The National "N" is nice and crisp. The lot code looks legit at first glance, but I haven't checked National's marking info to compare. There's also this .pdf with a bunch of info on device marking for National's devices.
Tom
Tom
I've dealt with B+D Enterprises in the past and have had good experiences there. Looks like they have the TDA2052 as well.
Tom
Tom
I've dealt with Jameco several times and always had good experiences there. They're a legit place.
Tom
Tom
That's great! This is the first time buying from them, lm338k steel for 8.95$ is a good deal.
I think!
I think!
Yes, that is a VERY good price. But I'm wondering WHAT do you expect in return for the 5 x price for the TO-3 steel version as opposed to the TO-220 encasing. Both are rated on the data sheet the same--5 amps continuous (8 amps if Vin-Vout is <10 volts), and 7 amps peak. Perhaps the steel version would require less heat sinking? Both should have a heat sink, anyway.
U are right , but the k version gives u more flexibility , it has 50w max power dissipation , that's 5amps x 10volts drop. The regular version gives u 25w max power dissipation , and I know (because I used it) gets very hot, even with a very large heatsink. But for sure the k version is a better product , why do you think that retails for more than 30$?
According to the TI datasheet, the TO-3 version has 1 C/W vs. the TO-220 4 C/W thermal resistance. Given good heat sinking in either case, the die in the TO-3 will run cooler and the part would have better long term reliability.
I do NOT see that specification in the data sheet; I DO see that given a Vin-Vout of <10 volts, it is rated at 8 amps. That's 80 watts.
I DO also see that the thermal resistance, junction-to-case is MUCH better (1 degree/watt versus 4) with the K package---that makes sense. It would therefore appear to indeed be more reliable in the long run. Just wish they weren't so D**n expensive!!
True , hard to find that in the texas instruments data sheet , but i found it in the National semiconductor lm338 datasheet, page 3, somewhere in the middle :
"Note 2: These specifications are applicable for power dissipations up to 50W for the TO-3 (K) package and 25W for the TO-220 (T) package. "
http://www.jameco.com/Jameco/Products/ProdDS/838621.pdf
one of the lm338k replacements is NTE935, google for info.
TO-3 package , 50watts power dissipation.
Please correct me if I'm wrong.
Gabe
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