Identifying TO-3 transistor pins?

[Mark]

How do I differentiate between the E and B pins of a TO-3 case power
transistor? 2N3055 if I remember correctly. Thanks.

 

[Terry Pinnell]

How do I differentiate between the E and B pins of a TO-3 case power
transistor? 2N3055 if I remember correctly. Thanks.

How do I differentiate between the FIVE copies of your post I've
received time stamped between 20:38 and 20:53?

 

[John Woodgate]

I read in sci.electronics.design that Terry Pinnell <terrypinDELETE@THES

How do I differentiate between the FIVE copies of your post I've
received time stamped between 20:38 and 20:53?

Ruling out referring to the time-stamp as too easy, did he use different
coloured inks?

 

[Mac]

How do I differentiate between the FIVE copies of your post I've
received time stamped between 20:38 and 20:53?

Here's how the OP in this thread appeared to me:

Complaints-To: [email protected]
Date: 6 Dec 2004 12:53:08 -0800
From: "Mark" [deleted]
Injection-Info: z14g2000cwz.googlegroups.com; posting-host=128.97.31.223; posting-account=lvlPswwAAADB-_Eu3myiQu5PAg6tu_eH
Lines: 3
Message-ID: <[email protected]>
NNTP-Posting-Date: Mon, 6 Dec 2004 20:53:13 +0000 (UTC)
NNTP-Posting-Host: 128.97.31.223
Newsgroups: sci.electronics.design
Organization: http://groups.google.com
Path: newssvr21.news.prodigy.com!newsdbm04.news.prodigy.com!newsdst01.news.prodigy.com!newsmst01a.news.prodigy.com!prodigy.com!newsswing.news.prodigy.com!prodigy.net!news.glorb.com!postnews.google.com!z14g2000cwz.googlegroups.com!not-for-mail
Subject: Identifying TO-3 transistor pins?
User-Agent: G2/0.2
X-Complaints-To: [email protected]
X-Trace: posting.google.com 1102366393 28367 127.0.0.1 (6 Dec 2004 20:53:13 GMT)
Xref: newsmst01a.news.prodigy.com sci.electronics.design:502575
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1

How do I differentiate between the E and B pins of a TO-3 case power
transistor? 2N3055 if I remember correctly. Thanks.



------------end OP------------

Perhaps you should send a complaint to [email protected]? Maybe they
know how to tell all these posts apart. ;-)

--Mac

 

[Jim Thompson]

How do I differentiate between the E and B pins of a TO-3 case power
transistor? 2N3055 if I remember correctly. Thanks.

I believe the "standard" is:

Hold device so a line _between_ the pins is horizontal, and that line
is above the center-line of the package, then read, left-to-right, B-E

...Jim Thompson

 

[Rich Grise]

I believe the "standard" is:

Hold device so a line _between_ the pins is horizontal, and that line
is above the center-line of the package, then read, left-to-right, B-E

No, no! You hold it so the line through both pins is _below_ the
centerline, and then it's E-B. ;-)

Cheers!
Rich