Yeah, die size looks fine.
I was surprised to see that Digikey has stock of over 4000 pieces of real Toshiba parts, both polarities. I thought they were no longer being made, but the accompanying datasheet is dated Nov. 2006. That seems like a safe purchase.
Nordic, I LOVE that avatar. 😎 I crack up every time I see it.
..Todd
I was surprised to see that Digikey has stock of over 4000 pieces of real Toshiba parts, both polarities. I thought they were no longer being made, but the accompanying datasheet is dated Nov. 2006. That seems like a safe purchase.
Nordic, I LOVE that avatar. 😎 I crack up every time I see it.
..Todd
Be very carefull... I purchased some Toshiba transistors only to find that they weren't the real thing.
Mouser seems to be a better bet when buying transistors.
I am going to try some 1943/5200 from ICS tommorrow... wonder if there will be sonic diffirence...
Authentic Toshiba 2sc5200/2sa1943 are current production and widely available. There are a lot of fakes also, and in many cases the fakes are more expensive than the real ones. It's the 2sc3281/2sa1302 which haven't been produced for years and are almost all fake. The counterfeiters prefer to fake the latter pair, because there's no competition now from the real thing.
The pics at the beginning of the thread show authentic devices, IMHO.
The pics at the beginning of the thread show authentic devices, IMHO.
Not true.
Had experience...just yesterday with this devices.
I had a 3 sets of 1943/5200 and everytime i would try to softly start up the output stage of my amp it would blow.
finally i decided to purchase this devices form another source.
i wanto to say right away that with this devices i did not have any problem.
Also, i want to outline that the bad devices measured with my tester (fluke 115) on diode position proved to be allright.
Differences on the outside:
as the first pic posted here the bad devices had the writes barely visible whilest the other one had a clear write.
I don't know if the guy here has the same problem the only thing is to try them up to their SOA limit and see if they can handle it.
One last thing: from the picture, thought, the silicon area seems to be big enough.
😕
Had experience...just yesterday with this devices.
I had a 3 sets of 1943/5200 and everytime i would try to softly start up the output stage of my amp it would blow.
finally i decided to purchase this devices form another source.
i wanto to say right away that with this devices i did not have any problem.
Also, i want to outline that the bad devices measured with my tester (fluke 115) on diode position proved to be allright.
Differences on the outside:
as the first pic posted here the bad devices had the writes barely visible whilest the other one had a clear write.
I don't know if the guy here has the same problem the only thing is to try them up to their SOA limit and see if they can handle it.
One last thing: from the picture, thought, the silicon area seems to be big enough.
😕> the bad devices had the writes barely visible whilest the other one had a clear write.
If you're referring to the legend/text on the plastic encapsulation, actually the text on the genuine Toshiba 2sc5200 is harder to read against the matt finish of the encapsulation, than the text on the fakes, which are often printed on a clear rectangular window in the plastic encapsulation.
I have no doubt that the ones shown in the first picture are authentic.
If you're referring to the legend/text on the plastic encapsulation, actually the text on the genuine Toshiba 2sc5200 is harder to read against the matt finish of the encapsulation, than the text on the fakes, which are often printed on a clear rectangular window in the plastic encapsulation.
I have no doubt that the ones shown in the first picture are authentic.
I am saying that in the past I have gotten bad/fake Toshiba transistors from Digikey.
When ANY supplier carries parts that are no longer made it is a cause for concern.
Also, there are two tab marks on the top of all pieces - I read somewhere (Spanish Site) that the fake ones had only one tab mark.
Clarity of typeset, color of device, size of metal tab, etc...I knew the only way to confirm was to bust one open.
Woohoo. If you all agree that these are most likely real, I will proceed with the KSA-50 Clone project.
Clarity of typeset, color of device, size of metal tab, etc...I knew the only way to confirm was to bust one open.
Woohoo. If you all agree that these are most likely real, I will proceed with the KSA-50 Clone project.
burnedfingers said:
A quick enquiry produced this [even quicker] response from Digikey:
--------------------------
Todd, thank you for your inquiry about Toshiba products. Digi-Key has a very strict policy of buying product only from Toshiba.
Toshiba has obsoleted all the lead version's, without the Q in the suffix of part number, however, they are still producing; 2SA1943-OQ; 2SC5200-OQ; I have not heard of a LTB date as of yet on the lead free versions. Toshiba would pull the data sheets on their existing part search if these were no longer supported, see below for current product folders on Toshiba Web Site:
http://www.semicon.toshiba.co.jp/openb2b/websearch/productDetails.jsp?partKey=2SA1943+#2
http://www.semicon.toshiba.co.jp/openb2b/websearch/productDetails.jsp?partKey=2SC5200+#2
We have only Toshiba qualified product in stock; if you require any supporting documents please notify customer service. We can supply you with Toshiba Labels and such regarding their Quality Assurance. Please let me know if there is anything else I can help you with.
Thank You
<name, & contact info withheld for courtesy reasons>
Toshiba PM, Digi-Key Corp.
Today I get this e-mail from sunspirit - perhaps of interest for some members:
Dear Customer,
Good day!
We would like to inform you that TOSHIBA 2SA1943-O + 2SA5200-O will be phased-out very soon. This will be replaced by TTA1943-Q + TTC5200-Q.
* PHASE-OUT ITEM : 2SA1943-O + 2SA5200-O
This is an TOSHIBA 150W 15A series 230V Power Transistor in TO-3P(L) / (2-21F1A) package.
* REPLACEMENT ITEM: TTA1943-Q + TTC5200-Q
This is a new version pin to pin direct replacement of 2SA1943-O + 2SA5200-O with very competitive price.
SPECIAL OFFER
Item No. Part No. Brand Quantity Unit Price Ref./Del.
EX-OFFICE USD
1 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.2464 1K Price / 1-2 weeks
2 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.2247 5K Price / 1-2 weeks
3 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.2139 10K Price / 1-2 weeks
4 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.1922 >10K Price / 1-2 weeks
Please advise your interests in placing an order with us.
Should you have further queries or need further information,
please feel free to contact us anytime.
We look forward to hearing from you soon.
Thanks & Best Regards,
Ebba for Mr Richard Hung
Marketing Department
Sunspirit Electronic Ltd
Tel: 852-25166831
Fax: 852-29110482
Email: compon@sunspirit.com.hk
URL: Sunspirit AV Ltd.
Dear Customer,
Good day!
We would like to inform you that TOSHIBA 2SA1943-O + 2SA5200-O will be phased-out very soon. This will be replaced by TTA1943-Q + TTC5200-Q.
* PHASE-OUT ITEM : 2SA1943-O + 2SA5200-O
This is an TOSHIBA 150W 15A series 230V Power Transistor in TO-3P(L) / (2-21F1A) package.
* REPLACEMENT ITEM: TTA1943-Q + TTC5200-Q
This is a new version pin to pin direct replacement of 2SA1943-O + 2SA5200-O with very competitive price.
SPECIAL OFFER
Item No. Part No. Brand Quantity Unit Price Ref./Del.
EX-OFFICE USD
1 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.2464 1K Price / 1-2 weeks
2 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.2247 5K Price / 1-2 weeks
3 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.2139 10K Price / 1-2 weeks
4 TTA1943-Q + TTC5200-Q TOSHIBA 1 1.1922 >10K Price / 1-2 weeks
Please advise your interests in placing an order with us.
Should you have further queries or need further information,
please feel free to contact us anytime.
We look forward to hearing from you soon.
Thanks & Best Regards,
Ebba for Mr Richard Hung
Marketing Department
Sunspirit Electronic Ltd
Tel: 852-25166831
Fax: 852-29110482
Email: compon@sunspirit.com.hk
URL: Sunspirit AV Ltd.
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