The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
Reply-To: "Fred Bartoli"
From: "Fred Bartoli"
Subject: Re: japanese transistor
Date: Sun, 8 Dec 2002 21:02:09 +0100
X-Newsreader: Microsoft Outlook Express 5.00.2919.5600
Organization: Guest of ProXad - France
NNTP-Posting-Date: 08 Dec 2002 21:00:44 MET
"Boris Mohar" a écrit dans le message
> On Sun, 08 Dec 2002 16:27:09 GMT, Spehro Pefhany
> >On Sun, 08 Dec 2002 11:05:57 -0500, the renowned Boris Mohar
> > wrote:
> >>I just got bitten by BC546 The pinout is reverse ordered when compared
> >>"standard" TO92. Why mr. Phillips? Why?
> >What is sacred about the US-standard layout?
> Nothing. Hence the quote marks. It is just that most of the TO92 follow
> the same pinout. Than again in I did not take a world pool on that.
> > Actually the Japanese one makes more sense to me, what with the
collector on the middle part of
> >the leadframe. Like SMT BJTs.
> Actually since in the schematic the base it in the middle it would make
> more intuitive sense to me that the base of the real part be in the
> middle. This is not efficient packaging for higher power devices where
> every nano henry and milliohm make the difference.
> Likewise we have Motorola MPSH series (MPSH20) with the emitter in the
> center. These are RF transistors and no doubt they had a good reason.
Yep, the emitter connection is shielding the base connection from the
> Don't bother looking them up on Motorola website. They are probably
> obsolete. When Motorola obsoletes a product they deny all knowledge of it
> having ever existed.
> Boris Mohar
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup