Any Russian DIY'ers ?

[mat]

Could someone suggest me some of the best Russian germanium transistors for the fuzz face (and ge-overdrive) style circuits. I just bought some MP20A's (did not got them yet) . Would these be good for the FF ? Any other models too look after. Or should I try any GE bipolar PNP's in FF ?

Thanks,
mat

[MetalGuy]

Check out one of the russian forums and ask them:

http://forum.gtlab.net/cgi-bin/yabb2/YaBB.pl

Or may maybe Medved will answer you here.

[MartyMart]

I just had great results with the following :
GT402's (PNP) GT404's ( some 404's are NPN some PNP )
GT309A/B (PNP) ... A are 50-90 hfe and B around 70-150
In Russian "Crylic" they are "RT" not "GT"

Marty.

[jmusser]

The GT308V (80-200), and B (50-120) trannies are great too. The 308As are fine too, but they're a lot lower gain (20-75). You can go to http://staric02.chat.ru/pdf/tgmm_3.pdf  to get some information on the GT series of transistors. You'll need it for pin outs anyway. It's also good to keep a Russian alphabet handy, because you'll think that for instance that a capital "B" looking letter is "B", when in reality it's "V" , etc. you can get a batch off Ebay for cheap, and the quality is wonderful.

[Ivana]

"GT404's ( some 404's are NPN some PNP )" - good joke! 
Вообще-то на вкус и цвет... 
ГТ402И - имхо хорошо подходят для ФуззФэйсов. У "Г" средний Ку больше, у "Б" ещё больше - но утечка выше 300мКа. У "А", "В", "Ж" и т.п... Ку меньше - хорошо для тонебендеров и Ранджмастеров.
Но пробовать имхо надо ВСЕ. Я для себя пока нашел только одно отличие - технология изготовления (низкочастотные сплавные против высокочастотных диффузионных). К последним кстати относятся все ГТ3ХХХ. А ГТ402... - сплавные.
"Or should I try any GE bipolar PNP's in FF" - именно! 

[MartyMart]

"GT404's ( some 404's are NPN some PNP )" - good joke! 
-?? ?? ? ? ?... 
??402? - ? ?? ?. ? "?" ? ?? , ? "?" - ?? ? 300???. ? "?", "?", "?" ? ?.?... ?? - ? ?.
?? ? ? . ? ? ? ?? ? ? - ? (?? ?? ). ? ??3???. ? ??402... - ??.
"Or should I try any GE bipolar PNP's in FF" - ! 

Well, that's what my transistor data PDF say's, depends on the "suffix" of the 404 !

Marty.

[Steben]

Oh yes, I REALLY would like to learn Russian... I always did... But it never happens...
High School...College...music...car...children...

[mat]

Big thanks to all for the tips !

So, so far good ones are: GT402, GT404, GT309A/B, GT308V and B, 308A.

Thanks jmusser for the pdf  I won a set of 40 MP20A's from ebay. Can't wait to try them in FF 

MetalGuy: sorry but I can't speak or read russia, think they would accept a question in english ?

Ivana: Would very much like to know what You wrote 

The thing is that we have russian theatre group visiting on our theatre. Thare are two nice guys on lighting department that I thought to ask if they would like to check the St. Petersburg's electrick shops for the ge-trannies and sell me few of those. I just have to know the exact part number and possibly have a photo of the item.

Any more suggestions ? Anyone by chance from St. Petersburg  , good sources to look ?

mat

[DDD]

Hi man,
I would like to confirm:
1.  Russian (Soviet)  GT308V (ГТ308В - literally Russian pronouncation) have the best betta 80...120, and they are the most "soft" Ge trannies among the Soviet ones. Also they have low-noiser specification.
2. GT402 and GT404 are the "pseudo-complementary" transistors. They have kow betta at collector currents lower than 100 mA because the are "medium power-capacity" trannies according to the ancient Soviet classification. But there are  some opinions that GT402\404 are good enough for the FF and similar devices.
3. Also I would like to recommend MP39B  ( МП39Б ): they have good betta and low-noise factor.
4. What about MP20 (МП20А, МП20Б) - regretfully they seem to be a junk.

[mat]

Hi man,
I would like to confirm:
1.  Russian (Soviet)  GT308V (ГТ308В - literally Russian pronouncation) have the best betta 80...120, and they are the most "soft" Ge trannies among the Soviet ones. Also they have low-noiser specification.
2. GT402 and GT404 are the "pseudo-complementary" transistors. They have kow betta at collector currents lower than 100 mA because the are "medium power-capacity" trannies according to the ancient Soviet classification. But there are  some opinions that GT402\404 are good enough for the FF and similar devices.
3. Also I would like to recommend MP39B  ( МП39Б ): they have good betta and low-noise factor.
4. What about MP20 (МП20А, МП20Б) - regretfully they seem to be a junk.

Hi DDD,

Thanks for the tips ! I'll try to find GT308V's then 

mat

[mat]

Hi DDD !

Hi man,
I would like to confirm:
1.  Russian (Soviet)  GT308V (ГТ308В - literally Russian pronouncation) have the best betta 80...120, and they are the most "soft" Ge trannies among the Soviet ones. Also they have low-noiser specification.
2. GT402 and GT404 are the "pseudo-complementary" transistors. They have kow betta at collector currents lower than 100 mA because the are "medium power-capacity" trannies according to the ancient Soviet classification. But there are  some opinions that GT402\404 are good enough for the FF and similar devices.
3. Also I would like to recommend MP39B  ( МП39Б ): they have good betta and low-noise factor.
4. What about MP20 (МП20А, МП20Б) - regretfully they seem to be a junk.

I just noticed that the MP39B's You recommended has hfe from 20 to 60 (according the Russian datasheet I just got).

I just bought six of the and they measured as:
48
48
56
34
32
37

Have You got good experiences with these on FF ?

mat