4-lead ceramic resonator ?

M

mario

Guest
Hello,


I ordered a 6 MHz ceramic resonator, and I got a thing with 4 leads?! I
would have known what to do with 2 or 3 leads ceramic resonators, but 4 !??


Does anyone have a clue what are these leads? They are 4 in a row, similar
to the 3-lead resonators, but with 2 and 2 leads a bit more apart.


thanks again for your help



mario
 
mario wrote:
Hello,

I ordered a 6 MHz ceramic resonator, and I got a thing with 4 leads?! I
would have known what to do with 2 or 3 leads ceramic resonators, but 4 !??

Does anyone have a clue what are these leads? They are 4 in a row, similar
to the 3-lead resonators, but with 2 and 2 leads a bit more apart.

thanks again for your help

mario
Click to expand...
Have you asked the vendor for a data sheet? Does it have the brand
name and part number?


--
We now return you to our normally scheduled programming.

Take a look at this little cutie! ;-)
http://home.earthlink.net/~mike.terrell/photos.html

Michael A. Terrell
Central Florida
 
Ummm... apparently it's a "frequency band filter" (translated from finnish)
and I can't see the product code now, as I don't have a microscope handy,
but as soon as I get home, I will read it from the part.

However, since it's apparent that I have a ceramic band-pass filter, my
question becomes: how can I use that as a resonator?


"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:3FFC2B18.F5E8B1FF@earthlink.net...
mario wrote:

Hello,

I ordered a 6 MHz ceramic resonator, and I got a thing with 4 leads?! I
would have known what to do with 2 or 3 leads ceramic resonators, but 4
!??

Does anyone have a clue what are these leads? They are 4 in a row,
similar
to the 3-lead resonators, but with 2 and 2 leads a bit more apart.

thanks again for your help

mario

Have you asked the vendor for a data sheet? Does it have the brand
name and part number?


--
We now return you to our normally scheduled programming.

Take a look at this little cutie! ;-)
http://home.earthlink.net/~mike.terrell/photos.html

Michael A. Terrell
Central Florida
Click to expand...
 
I ordered a 6 MHz ceramic resonator, and I got a thing with 4 leads?! I
would have known what to do with 2 or 3 leads ceramic resonators, but 4 !??
Click to expand...
My guess would be that two leads go to the resonator and two to
internal caps, i.e. you have a cap between pins 1-2, another cap
between pins 3-4, and the resonator is connected between pins 2-3, so
you can use your own external caps if desired (by leaving 1 and 4 NC).

But you need a datasheet :)
 
"Lewin A.R.W. Edwards" <larwe@larwe.com> wrote in message
news:608b6569.0401071117.1d5651d9@posting.google.com...
I ordered a 6 MHz ceramic resonator, and I got a thing with 4 leads?! I
would have known what to do with 2 or 3 leads ceramic resonators, but 4
!??

My guess would be that two leads go to the resonator and two to
internal caps, i.e. you have a cap between pins 1-2, another cap
between pins 3-4, and the resonator is connected between pins 2-3, so
you can use your own external caps if desired (by leaving 1 and 4 NC).
I had almost exactly the same guess, except that I thought the resonator was
Click to expand...
between 1 and 4. This is a deduction from the 3-lead ceramic resonators,
where the middle lead is usually tied to ground, as there are grounding
capacitors between leads 1&2 and 2&3, while the resonator is between the two
extreme leads 1&3. So, I thought that in an analog way, the resonator in my
case should be between 1 and 4.

But, I wasn't able to make it work as an oscillator, due, probably, to a
busted Cypress USB controller. I'll try with other permutations of the pins,
though.

But you need a datasheet :)
Hey, I don't have one, sorry :eek:))) but I could see with my microscope, a
Click to expand...
logo: a big "C" with a capital "M" inside it. Does that ring a bell to you?

p.s. I think there's a website with electronics manufacturer logos. Do you
know which one it is?
 
p.s. I think there's a website with electronics manufacturer logos. Do you
know which one it is?
Mario:
Click to expand...
Don't know if it's the one you saw, but one site is
http://www.eyesurf.co.uk/~nutteing/logotext.htm

HTH
Good luck!
Dave Cole
--
How do you tell a communist? Well,
it's someone who reads Marx and Lenin.
And how do you tell an anti-Communist?
It's someone who understands Marx and Lenin.
Ronald Reagan
 
Hey Dave,

thanks for the link. No, it' wasn't this, but it's good to have anyway.

cheers


mario
"Dave Cole" <davidwcole@earthlink.net> wrote in message
news:BC220638.9C4%davidwcole@earthlink.net...
p.s. I think there's a website with electronics manufacturer logos. Do
you
know which one it is?
Mario:
Don't know if it's the one you saw, but one site is
http://www.eyesurf.co.uk/~nutteing/logotext.htm

HTH
Good luck!
Dave Cole
--
How do you tell a communist? Well,
it's someone who reads Marx and Lenin.
And how do you tell an anti-Communist?
It's someone who understands Marx and Lenin.
Ronald Reagan
Click to expand...
 
mario wrote:
... but I could see with my
microscope, a logo: a big "C" with a capital "M" inside it. Does that
ring a bell to you?
Click to expand...
I have a feeling that is the MuRata logo.


--
Graham W http://www.gcw.org.uk/ XP1800+ Page added, Graphics Tutorial
WIMBORNE http://www.wessex-astro-society.freeserve.co.uk/ Wessex
Dorset UK Astro Society's Web pages, Info, Meeting Dates, Sites & Maps
Change 'news' to 'sewn' in my Reply address to avoid my spam filter.
 
You are right, it's a Murata logo. I just checked one of their online
datasheets, and indeed, the logo they use on their components is the one I
described.

Thanks!


mario

"Graham W" <graham@his.com.puterINVALID> wrote in message
news:_AgLb.12001$tQ6.264091@wards.force9.net...
mario wrote:
... but I could see with my
microscope, a logo: a big "C" with a capital "M" inside it. Does that
ring a bell to you?

I have a feeling that is the MuRata logo.


--
Graham W http://www.gcw.org.uk/ XP1800+ Page added, Graphics Tutorial
WIMBORNE http://www.wessex-astro-society.freeserve.co.uk/ Wessex
Dorset UK Astro Society's Web pages, Info, Meeting Dates, Sites & Maps
Change 'news' to 'sewn' in my Reply address to avoid my spam filter.
Click to expand...
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top