Looking for info on old transistors

[Electron Tornado]

I have a couple of old transistors, probably manufactured in the 60s, and I can't find any information about them. I'm guessing they are germanium, since they appear to be kind of leaky. The only markings on them are:

CONY

CL 77


Anyone ever see a transistor with these markings?

[tonyharker]

Are you sure its not OC77, a well known Germanium Transistor by Mullard/Philips?

[mozz]

Pictures?

[Electron Tornado]

Are you sure its not OC77, a well known Germanium Transistor by Mullard/Philips?

No, the markings are clear - CL 77

Even searching "SC77", "2SC77", or "AC77" yields nothing. There is info on a 2SB77, which is a PNP transistor made by Hitachi.

[Mark Hammer]

Do they look like black licorice capsules?  I.E., rounded end and tubular?  If so then the likelihood is that it's an OC77, perhaps with a house number.

[Electron Tornado]

Do they look like black licorice capsules?  I.E., rounded end and tubular?  If so then the likelihood is that it's an OC77, perhaps with a house number.

They are cylindrical, with a light green, plastic cover, with the markings in red. I have another transistor like these, but it is marked CB 0. I cut the plastic cover off of it and there are not markings on the body underneath. 

[11-90-an]

Pictures?

^^^
No description can beat the real thing. Unless the person saying whatever is exaggerating (not saying that you are, Electron tornado... )

[Electron Tornado]

Here's a photo. I have two of these that recently found their way into a fuzz face clone.

[Govmnt_Lacky]

There was a company called Cony that produced transistor radios in the 60s. Unfortunately, the CL77 is probably a house number. 

[willienillie]

The picture makes me think Japanese.  Not very scientific, but the color and general dimensions I guess.  Did you get them raw or pull from old equipment?

[mozz]

Sanyo.

[willienillie]

Sanyo.

Yep.  I did a google images search for "sanyo germanium transistor" and saw many with the same pale green wrap.  Which model, who knows.  I agree it's probably a house number for Cony, but maybe 2SB77 or something like that.  Anyway, as long as the gain and leakage fit your needs, go for it.  I bet they sound great.  I have had consistently good luck with Japanese germaniums.

[Electron Tornado]

The picture makes me think Japanese.  Not very scientific, but the color and general dimensions I guess.  Did you get them raw or pull from old equipment?

It either came out of a transistor radio, as suggested by Govmnt_Lacky, or from a portable reel to reel tape recorder. These were pulled by me, from whichever defunct gadget it was, many, maaaany moons ago.

One had a gain just under 70 and the other was 113. Both were very leaky, but I got them both biased correctly and they do sound good.

[Phend]

What is meant by leaky on a transistor ?

[mozz]

Can't be a 2sb77 if it's a Sanyo (which i beleive because i have a bunch with that color wrap). While US and other countries might have made transistors, 2n404 for example, they were made by RCA, GE, TEXAS INSTRUMENTS, AMPEREX ETCO, etc. 99% of Japanese transistors had 1 specific maker. A 2SB54 were only made by Toshiba. 2SB175 were only made by Matsushita. 2SB333 was only made by Hitachi. This is proved out in the "Transistor specification manuals" Printed by Howard W Sams company. I have a few different editions but they all tell you who made a specific  transistor. These books are well worth the few dollars they sell for and the latest ones have everything the old ones have plus the latest transistors. All usual parameters are there including leakage and gain and at what collector current they were measured at.

[willienillie]

Cool, didn't know that.