I'm looking for a data sheet for the 2SC2397. www.datasheetarchive.com
appears to have just a 1 line description. Does anyone have more ?

Steve

"Steve Kavanagh"

I'm looking for a data sheet for the 2SC2397. www.datasheetarchive.com
appears to have just a 1 line description. Does anyone have more ?



** Appears to be an obsolete type.

Several references quote the " MJE3055T " as being a replacement with
similar or better specs.





....... Phil

On Sat, 3 Jun 2006 21:20:18 +1000, the renowned "Phil Allison"
wrote:


"Steve Kavanagh"

I'm looking for a data sheet for the 2SC2397. www.datasheetarchive.com
appears to have just a 1 line description. Does anyone have more ?



** Appears to be an obsolete type.

Several references quote the " MJE3055T " as being a replacement with
similar or better specs.

Gack! Well, you can bolt it in the same place and the pinout is the
same, but things kinda fall apart from there.. considering the ft of
the 3055 is 2MHz vs 100MHz for the 2SC2397.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

"Spehro Pefhany"


** Appears to be an obsolete type.

Several references quote the " MJE3055T " as being a replacement with
similar or better specs.

Gack! Well, you can bolt it in the same place and the pinout is the
same, but things kinda fall apart from there.. considering the ft of
the 3055 is 2MHz vs 100MHz for the 2SC2397.



** The Motorola " POWER Data Book" of 1982, lists the devices as "similar
replacements" - as does the similar " Bipolar Power Transistor Data " of
1987.

I found at least 7 web sites, including the ST Microelectronics site, with
the same info.

Seems some staffer at Motorola made an error in the early 80s and it has
gone on and on and on ........




........ Phil

On Sat, 3 Jun 2006 22:40:39 +1000, the renowned "Phil Allison"
wrote:


"Spehro Pefhany"


** Appears to be an obsolete type.

Several references quote the " MJE3055T " as being a replacement with
similar or better specs.

Gack! Well, you can bolt it in the same place and the pinout is the
same, but things kinda fall apart from there.. considering the ft of
the 3055 is 2MHz vs 100MHz for the 2SC2397.



** The Motorola " POWER Data Book" of 1982, lists the devices as "similar
replacements" - as does the similar " Bipolar Power Transistor Data " of
1987.

I found at least 7 web sites, including the ST Microelectronics site, with
the same info.

Seems some staffer at Motorola made an error in the early 80s and it has
gone on and on and on ........

Maybe someone who was sick of the breaker-breaker-one-nine-rubber-duck
CB craze of the day? ;-) Unfortunately lots of references on the
'net may just mean that the stuff was all copied from one source.

BTW, any Japanese speakers here? The Japanese characters for Hitachi
appear to be only two syllables. The characters would be pronounced
"ri4 li4" in Chinese ('sun' or 'day' and 'stand'), maybe "hi ta" in
Japanese? Is the "chi" just tacked on in English?

Mazda is the opposite-- it's three syllables in Chinese (and probably
Japanese as well). And Alps (the component maker)is two syllables in
Japanese.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

On Sat, 03 Jun 2006 09:10:44 -0400, Spehro Pefhany wrote:
On Sat, 3 Jun 2006 22:40:39 +1000, the renowned "Phil Allison"
...
Seems some staffer at Motorola made an error in the early 80s and it has
gone on and on and on ........

Maybe someone who was sick of the breaker-breaker-one-nine-rubber-duck
CB craze of the day? ;-) Unfortunately lots of references on the
'net may just mean that the stuff was all copied from one source.

BTW, any Japanese speakers here? The Japanese characters for Hitachi
appear to be only two syllables. The characters would be pronounced
"ri4 li4" in Chinese ('sun' or 'day' and 'stand'), maybe "hi ta" in
Japanese? Is the "chi" just tacked on in English?

With Japanese Kanji, there's no telling. ;-) Fujiyama, for example,
is two Kanjis.

Mazda is the opposite-- it's three syllables in Chinese (and probably
Japanese as well). And Alps (the component maker)is two syllables in
Japanese.


In Katagana or Hiragana, Ma zu da is three, yes, but A ru pu su is _four_! ;-)
(I think they're pronounced more like Ma z' da and A r' p' s'. :-) )
To yo ta comes out just right, however. :-)

Cheers!
Rich

Sphero,

The way Japanese read Chinese chracters is done in two ways.
1. Something resembles the original Chinese pronounciation at the time
Like Hitachi's "Hi" part.
2. Ancient Japanese word adopted to a Chinese chracter with same meaning.
Like Hitachi's "Tachi" part. This means "standing", as you mentioned.

Hitachi is the name of the city where Hitachi originated as a repair
facility for the mine there in 1910.

Mazda is actually "Matsuda", which is composed of "Matsu (pine tree)" and
"Ta (field)". "Ta" changes to "Da" when it is attached to some other
character (sorry, forgot how is called in English). "Matsu" and "Ta" are
both from ancient Japanese words.
Alps is named after the English term "Alps".

Hope I'm not confusing you even more!

Regards,
Satoru

BTW, any Japanese speakers here? The Japanese characters for Hitachi
appear to be only two syllables. The characters would be pronounced
"ri4 li4" in Chinese ('sun' or 'day' and 'stand'), maybe "hi ta" in
Japanese? Is the "chi" just tacked on in English?

Mazda is the opposite-- it's three syllables in Chinese (and probably
Japanese as well). And Alps (the component maker)is two syllables in
Japanese.


Best regards,
Spehro Pefhany

On 3 Jun 2006 04:09:04 -0700, the renowned "Steve Kavanagh"
wrote:

I'm looking for a data sheet for the 2SC2397. www.datasheetarchive.com
appears to have just a 1 line description. Does anyone have more ?

Steve

You can see from the Kanji in the transistor manual that the original
manufacturer is Hitachi (http://www.trexon.com/hitachi.gif)

...along with quite a few parameters. It's designed to be an RF power
amplifier, especially for CB.

This is supposed to be a similar part:
http://www.cpcares.com/pdf/2SC1817.PDF

with a similar (but less) power output rating (15W vs 18W for the
2SC2397 @27MHz output).


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

Steve Kavanagh wrote:

I'm looking for a data sheet for the 2SC2397. www.datasheetarchive.com
appears to have just a 1 line description. Does anyone have more ?

Shouldn't be too tricky to sub it. Low voltage ( by my standards ) npn 25W 50MHz
in TO-220 are a dime a dozen surely ?

Graham

Pooh Bear wrote:
Steve Kavanagh wrote:

I'm looking for a data sheet for the 2SC2397

Shouldn't be too tricky to sub it. Low voltage ( by my standards ) npn 25W 50MHz
in TO-220 are a dime a dozen surely ?

Actually I think such devices characterized for RF PA use are getting a
bit thin on the ground with the CB craze over, most other HF
applications needing more power and low-VHF most often using integrated
modules or at least having the budget for real RF packages. But some
comparison with other data sheets might be useful.

I actually have some (and a source for more at a good price, though
production is not my intent) but was pondering if they could be
stretched to 50 MHz, so the data sheets for similar devices may not be
too applicable. Especially the MJE3055T !! I had noticed that curious
substitution suggestion !

Steve