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SanKen Discontinuing MT200 Power transistors
SanKen Discontinuing MT200 Power transistors
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Old 9th February 2018, 09:15 AM   #51
Project16 is offline Project16  France
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Hello everyone

Han anyone tried the MT200 (2SC2922 & 2SA1216) of the company 'Inchange'?

Regard's
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Old 9th February 2018, 11:33 AM   #52
astx is offline astx  Austria
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SanKen Discontinuing MT200 Power transistors
Quote:
Originally Posted by sajti View Post
No. I use 4883/1859 from Digikey, and waiting for TTC/TTA004 from Mouser, to try.

Sajti
OK! I have bought many test samples of 2SA1837LB-TF3T and 2SC4793LB-TF3T from UTC via profusionplc. I will let you know if they perform similar in my amplifier models and if they are reliable. As soon as my new lab is finished - of course ... maybe in 1 -2 weeks ...

BR, Toni
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Old 9th February 2018, 11:43 AM   #53
thimios is offline thimios  Greece
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Quote:
Originally Posted by astx View Post
OK! I have bought many test samples of 2SA1837LB-TF3T and 2SC4793LB-TF3T from UTC via profusionplc. I will let you know if they perform similar in my amplifier models and if they are reliable. As soon as my new lab is finished - of course ... maybe in 1 -2 weeks ...

BR, Toni
Oh Toni!
I believe that you lost your money
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Old 9th February 2018, 11:54 AM   #54
astx is offline astx  Austria
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SanKen Discontinuing MT200 Power transistors
Maybe?
Have had 10 samples before. Tests where ok so far, but now the reliability needs to be checked...
If not: have tons of original toshibas - enough for future projects.
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Old 9th February 2018, 11:55 AM   #55
sajti is offline sajti  Hungary
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Quote:
Originally Posted by astx View Post
OK! I have bought many test samples of 2SA1837LB-TF3T and 2SC4793LB-TF3T from UTC via profusionplc. I will let you know if they perform similar in my amplifier models and if they are reliable. As soon as my new lab is finished - of course ... maybe in 1 -2 weeks ...

BR, Toni
Thanks! This is a big help for us!
Toshiba 004s are good enough, up to +/-50-55V, I guess.

Sajti
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Old 9th February 2018, 02:27 PM   #56
SVI2004A is offline SVI2004A  New Zealand
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SanKen Discontinuing MT200 Power transistors
Quote:
Originally Posted by aparatusonitus View Post
Oh well...you will be forgiven...I will pray for your soul
They wrote back, saying they were getting a truckload of them.... so top of the line amps will be made for quite some time
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Old 10th February 2018, 06:45 PM   #57
SyncTronX is offline SyncTronX  United States
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SanKen Discontinuing MT200 Power transistors
@Thule,

How much space can I grind off the top
to give myself room to mount the Transistor?

They are too large currently for me to use so
I have to take a 1mm to 3mm off the top.

In the devices that you show there, how far from
the top is the die impression (for lack of a better word).
Is there a connection wire there along the top edge?

Cheers,

Quote:
Originally Posted by Ultima Thule View Post
They are buried in the list.
Discontinued Products |Sanken Electric

Just IMHO I don't miss the MT200 packages.
One can get roughly 6 pcs of equivalent TO-3P devices for the same price as 4 pcs of MT200, inside it the silicon substrate is still attached onto a TO-3P metal base which in turn is attached to a larger MT200 base, paying ~2 €$Ł more for extra metal and plastic huh?

Borrowing a picture from this link:
2SA1215 2SC2921, identify genuine and fake
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Old 11th February 2018, 09:22 AM   #58
Welcome is offline Welcome  France
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Quote:
Originally Posted by Project16 View Post
Hello everyone

Han anyone tried the MT200 (2SC2922 & 2SA1216) of the company 'Inchange'?

Regard's
All Inchange transistors are fake, and not usable for anything but load resistors or shunts. They use the same useless, tiny die in all transistors and just put all known part numbers on them, to flip junk to less informed folks. Very bad company.
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Old 11th February 2018, 04:10 PM   #59
AudioPackrat is offline AudioPackrat  United States
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I called Digi-Key and asked if they planned on restocking any MT-200 parts before or at the last order deadline. They said that they were not planning to do so. However, if there was enough demand, they might reconsider.

So call Dig-Key (and B&D too, why not?), ask for the applications tech, or better yet, the project manager, if you can get him, and express your desire to keep these devices in stock for as long as possible.
It will only take a minute or two of your time.
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Old 15th February 2018, 07:35 PM   #60
glen65 is offline glen65  United States
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I've already been looking at what the options might be for service replacement (not new design), but would like to get input from some here. I've seen the point made other devices could fall short in terms of power handling capability at higher Vce. If there was no choice but to use a different device what would you use?
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