On Wed, 20 Feb 2019 02:01:51 -0800, Phil Allison wrote:

wrote:

.
.


In the 1960s the pocket radios hit the market and were sold everywhere.
I have not opened one of them in years, but I recall the transistors
used in them did not look like more modern types. They had a small
metal can. Just a straight sided metal can, shaped like modern
capacitors, but bare metal. Some had colored dots on them to identify
the leads too.

First, I am thinking that they were geranium types. Is that correct?


** Yep - made by the Japanese and many others.


http://oldtube.com/2N408-RCA-used-1pc.jpg



Second, I have a very old GE transistor manual (edition 2) (PDF). No
where in there does it mention the case style of them. What is the case
style?


** TO1



Shortly after, I recall seeing a lot of metal cases that were shaped
more like a hat, with a brim. Those too vanished.

http://oldtube.com/2N508-ETCO-Au-2pcs.jpg


And I recall seeing
some of the hat shaped types with a point sticking out of the top. I
always wondered what that point was for???



** You are always missing the point .....

See here for pics of a great many old semis.

http://oldtube.com/Oldtube-semiconductors.htm


Thanks for the link, Phil. What- no CK722!

.... Phil