madbeanpedals::forum

General => Open Discussion => Topic started by: jeffaroo on January 16, 2013, 08:34:22 PM

Title: P27's
Post by: jeffaroo on January 16, 2013, 08:34:22 PM
anybody ever use the russian P27 transistors in a build ?
how was it ?
use em again ?
Title: Re: P27's
Post by: midwayfair on January 16, 2013, 08:55:19 PM
Got a datasheet for that one? I read Russian, so I can tell you if they're appropriate for anything.
Title: Re: P27's
Post by: jeffaroo on January 16, 2013, 08:57:14 PM
 :) looks worthless
got a mail back from seller 5v  :'(
Title: Re: P27's
Post by: jeffaroo on January 16, 2013, 09:06:37 PM
these might work   MP25B
http://alltransistors.com/transistor.php?transistor=41732
Title: Re: P27's
Post by: midwayfair on January 16, 2013, 09:19:16 PM
Quote from: jeffaroo on January 16, 2013, 09:06:37 PM
these might work
http://alltransistors.com/transistor.php?transistor=41732

They'll work in Q1 of a a few things (perc is probably the best choice). That whole series of transistors (MP) is very good sounding and low leakage. However, you need to be aware that they will mostly be on the low side of their gain rating. It's very easy to get an unusable series.

GT313 is one of the best PNP Russians. They're small, and they have a weird pinout, but they sound excellent and they're TINY. For NPN I prefer MP38A.

You can use a 5v transistor in Q1 of a Fuzz Face. None of the voltages get above ... 1v there. But that's one of the only places.
Title: Re: P27's
Post by: jeffaroo on January 16, 2013, 09:30:35 PM
i was kind of looking for a all porpose trany (60-100ish)
gain em and throw on the shelf
lots of fuzz and benders coming up on the build list
Title: Re: P27's
Post by: stecykmi on January 17, 2013, 06:57:53 PM
Quote from: midwayfair on January 16, 2013, 08:55:19 PM
Got a datasheet for that one? I read Russian, so I can tell you if they're appropriate for anything.

haha amazing! any other hidden talents jon?
Title: Re: P27's
Post by: gtr2 on January 17, 2013, 07:26:29 PM
Da YA govoryu na russkom.khorosho

No Google delayer
Title: Re: P27's
Post by: garfo on January 21, 2013, 07:29:13 PM
I have a couple of P27 that I bought when
I was in Ukraine.I bought them together with some MP39 for a Fuzzface build and the P27 were just too poor.Didn't find any use for them yet.They're very poor on gain, but still, they appear to have low leackage contrary top the mp39's.
Quote from: jeffaroo on January 16, 2013, 08:34:22 PM
anybody ever use the russian P27 transistors in a build ?
how was it ?
use em again ?