need help urjently

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Does ne body knw what do the initials in the names: BC557,and IN4148
mean??
I mean what do 'B' and 'C' in BC557 and 'I' & 'N' in IN4148 mean??
I wanted it for my external viva.
 
ruchakanagala@gmail.com wrote:

Does ne body knw what do the initials in the names: BC557,and IN4148
mean??
I mean what do 'B' and 'C' in BC557 and 'I' & 'N' in IN4148 mean??
I wanted it for my external viva.
BC is the old european code for 'Broadcast Quality'.
Click to expand...
There is no IN code so that was probably originally an Intel house
number. Good luck with your Viva :)
 
ruchakanagala@gmail.com wrote:

Does ne body knw what do the initials in the names: BC557,and IN4148
mean??
I mean what do 'B' and 'C' in BC557 and 'I' & 'N' in IN4148 mean??
I wanted it for my external viva.
not sure about the BC, I think it's got something to do with nothing
Click to expand...
of transistors how ever, the IN... is actually 1Nxxxx


http://webpages.charter.net/jamie_5"
 
Jamie wrote:

not sure about the BC, I think it's got something to do with nothing
of transistors how ever, the IN... is actually 1Nxxxx


http://webpages.charter.net/jamie_5"
Click to expand...
The OP is about to be verbally examined on a subject that he belives a
superficial knowledge of transistor and diode marking codes will help
him pass. Two possibilities exist: 1. He is deluded, or 2. the examiner
is deluded. In either case assisting a student who cannot Google for
'transistor diode codes' and read the first result is a disservice to
the profession. If one is seeking accurate answers to homework and exam
cramming questions one should display at least a little prior effort.
 
On Sun, 07 Dec 2008 20:18:27 +0000, IanM <Invalid@totally.invalid>
wrote:

Jamie wrote:


not sure about the BC, I think it's got something to do with nothing
of transistors how ever, the IN... is actually 1Nxxxx


http://webpages.charter.net/jamie_5"


The OP is about to be verbally examined on a subject that he belives a
superficial knowledge of transistor and diode marking codes will help
him pass. Two possibilities exist: 1. He is deluded, or 2. the examiner
is deluded. In either case assisting a student who cannot Google for
'transistor diode codes' and read the first result is a disservice to
the profession. If one is seeking accurate answers to homework and exam
cramming questions one should display at least a little prior effort.
Click to expand...
Good thing it's verbal... he sure can't spell.

But it matters little what BC and 1N are. They're just part numbers,
and few if us will ever access the original JEDEC or equivalent
documents.

John
 
John Larkin wrote:

On Sun, 07 Dec 2008 20:18:27 +0000, IanM <Invalid@totally.invalid
wrote:


Jamie wrote:


not sure about the BC, I think it's got something to do with nothing
of transistors how ever, the IN... is actually 1Nxxxx


http://webpages.charter.net/jamie_5"


The OP is about to be verbally examined on a subject that he belives a
superficial knowledge of transistor and diode marking codes will help
him pass. Two possibilities exist: 1. He is deluded, or 2. the examiner
is deluded. In either case assisting a student who cannot Google for
'transistor diode codes' and read the first result is a disservice to
the profession. If one is seeking accurate answers to homework and exam
cramming questions one should display at least a little prior effort.



Good thing it's verbal... he sure can't spell.

But it matters little what BC and 1N are. They're just part numbers,
and few if us will ever access the original JEDEC or equivalent
^^ ( comment made > "he sure can't spell." Maybe one should
Click to expand...
proof read their own before criticizing others )
documents.

John
Click to expand...

http://webpages.charter.net/jamie_5"
 
<ruchakanagala@gmail.com> wrote in message
news:c2082da7-e3c6-42a1-8c6f-85b2955d7deb@u14g2000yqg.googlegroups.com...
Does ne body knw what do the initials in the names: BC557,and IN4148
mean??
I mean what do 'B' and 'C' in BC557 and 'I' & 'N' in IN4148 mean??
I wanted it for my external viva.
Click to expand...

'urjently' ... don't you have a spell checker?

Isn't it something like: for the European designations, first letter A =
Germanium, B = Silicon, C = something else (e.g. GaAs, as in Gunn diodes),
second letter A = 2-lead device such as a diode, B = RF 2-lead device, C =
LF low-power transistor, D = LF power transistor, F = RF low-power
transistor, G = switching transistor, L = RF power transistor, X or Y =
power diode, and so on, sometimes with a third letter for specialist
devices; and for the US designations, initial number 1 = 2-lead device, 2 =
3-lead device, 3 = 4-lead device (e.g. dual-gate FET) - the letter N
signifies the US numbering scheme and separates the initial number from the
remaining digits that form the device identifier, which represents all the
other information (e.g. Ge, Si, etc., NPN/PNP BJT, N or P-channel FET, etc.
from a look-up table)?

Then there's the Japanese scheme, Ferranti's old ZTXabc scheme, the
Newmarket NKTabc scheme, etc., etc.

Chris
 
Jamie wrote:
John Larkin wrote:

On Sun, 07 Dec 2008 20:18:27 +0000, IanM <Invalid@totally.invalid
wrote:


Jamie wrote:


not sure about the BC, I think it's got something to do with nothing
of transistors how ever, the IN... is actually 1Nxxxx


http://webpages.charter.net/jamie_5"


The OP is about to be verbally examined on a subject that he belives a
superficial knowledge of transistor and diode marking codes will help
him pass. Two possibilities exist: 1. He is deluded, or 2. the examiner
is deluded. In either case assisting a student who cannot Google for
'transistor diode codes' and read the first result is a disservice to
the profession. If one is seeking accurate answers to homework and exam
cramming questions one should display at least a little prior effort.



Good thing it's verbal... he sure can't spell.

But it matters little what BC and 1N are. They're just part numbers,
and few if us will ever access the original JEDEC or equivalent
^^ ( comment made > "he sure can't spell." Maybe one should
proof read their own before criticizing others )
Click to expand...

This, from the biggest offender on USENET? Anyway, 'IF' is spelled
correctly. Its just the wrong word. That makes it an error in context,
not spelling.


--
http://improve-usenet.org/index.html

aioe.org, Goggle Groups, and Web TV users must request to be white
listed, or I will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm


There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.
 
On Sun, 07 Dec 2008 18:59:54 -0500, Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Larkin wrote:

On Sun, 07 Dec 2008 20:18:27 +0000, IanM <Invalid@totally.invalid
wrote:


Jamie wrote:


not sure about the BC, I think it's got something to do with nothing
of transistors how ever, the IN... is actually 1Nxxxx


http://webpages.charter.net/jamie_5"


The OP is about to be verbally examined on a subject that he belives a
superficial knowledge of transistor and diode marking codes will help
him pass. Two possibilities exist: 1. He is deluded, or 2. the examiner
is deluded. In either case assisting a student who cannot Google for
'transistor diode codes' and read the first result is a disservice to
the profession. If one is seeking accurate answers to homework and exam
cramming questions one should display at least a little prior effort.



Good thing it's verbal... he sure can't spell.

But it matters little what BC and 1N are. They're just part numbers,
and few if us will ever access the original JEDEC or equivalent
^^ ( comment made > "he sure can't spell." Maybe one should
proof read their own before criticizing others )
documents.

John



http://webpages.charter.net/jamie_5"
Click to expand...
I can spell... I just can't type.

John
 
ruchakanagala@gmail.com wrote:

Does ne body knw what do the initials in the names: BC557,and IN4148
mean??
I mean what do 'B' and 'C' in BC557 and 'I' & 'N' in IN4148 mean??
I wanted it for my external viva.
Click to expand...
Well firstly it's NOT IN4148, it's 1N4148 !

And yes I do know but why should I tell someone who can't even be
bothered to research it for himself. Hint: JEDEC and Pro-Electron.

Graham
 
On Dec 8, 6:23 am, Eeyore <rabbitsfriendsandrelati...@hotmail.com>
wrote:
ruchakanag...@gmail.com wrote:
Does ne body knw what do the initials in the names: BC557,and IN4148
mean??
I mean what do 'B' and 'C' in BC557 and 'I' & 'N' in IN4148 mean??
I wanted it for my external viva.

Well firstly it's NOT IN4148, it's 1N4148 !

And yes I do know but why should I tell someone who can't even be
bothered to research it for himself. Hint: JEDEC and Pro-Electron.

Graham
Click to expand...
hey u r being so mean man.k fine ne ways im done wid my viva.
idont know y people bother to even reply when they are not interested
for help.!!
 
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