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'[PIC]:4mhz Ceramic resonator with Caps'
2001\11\11@123121 by Paul Tyrer

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Dear All.

Many Thanks for your Previous help.

As explained before I am very new to this sort of thing and really
appreciate all your help and patience.
Does anyone know of the equivalent within the United Kingdom of the Ceramic
Resonator with Caps.

I have scanned Farnell and Maplins Catalogue and website and there doesn't
seem to be a reference to that particular thing or at least not specifying
with caps etc,

However when applied to Digi-Key website instant success and a datasheet.

My question is this, Does anyone have experience with this part within the
UK and possibly part numbers or source.


Can I use a 4mhz Crystal instead ?
Many Thanks in advance once again

Paul Tyrer

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2001\11\11@125220 by Thomas McGahee

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Yes, you may use a crystal and two caps instead.

Fr. Tom McGahee

----- Original Message -----
From: Paul Tyrer <.....paul.tyrerKILLspamspam@spam@BTINTERNET.COM>
To: <PICLISTspamKILLspamMITVMA.MIT.EDU>
Sent: Sunday, November 11, 2001 12:19 PM
Subject: [PIC]:4mhz Ceramic resonator with Caps


> Dear All.
>
> Many Thanks for your Previous help.
>
> As explained before I am very new to this sort of thing and really
> appreciate all your help and patience.
> Does anyone know of the equivalent within the United Kingdom of the
Ceramic
{Quote hidden}

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2001\11\11@142747 by Brent Brown

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Paul Tyrer wrote:
> ....I have scanned Farnell and Maplins Catalogue and website and there
> doesn't seem to be a reference to that particular thing or at least
> not specifying with caps etc,....

Have a look at the Farnell catalog again under resonators, the ones
you want they call 3 lead ceramic resonators. The lead in the
middle is the common for the two internal capacitors and it goes to
ground. Part numbers 295-346 and 573-978 to be specific.

You can of course use a crystal and two capacitors, but it's nice
having one component instead of three.

Brent Brown
Electronic Design Solutions
16 English Street
Hamilton, New Zealand
Ph/fax: +64 7 849 0069
Mobile/text: 025 334 069
eMail:  brent.brownspamspam_OUTclear.net.nz

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2001\11\11@145800 by Jinx

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The last ones I got were from the Philips agent (equivalent to the
RadioSpares part 656-186, Murata CSA 4.00, NZ$1.77) for
NZ$0.55, or around UK20p. They're pretty good frequency-wise

There are a couple of 4's at Farnell's UK site. 295-267 (UK70p) &
295-346 (UK44p). Enter resonator in the "search text" box and
Product Desc in the "search by" box

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2001\11\11@151658 by Jinx

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Ooop. Teach me to do e-mails before brekky. I'd like five other
cock-ups taken into consideration your honour

The part I got was the ZTT4.00M, which is the 3-pin with caps, not
the regular 2-pin ZTA4.00M. I've looked through past RS catalogues
and they don't seem to have ever done 3-pin resonators. Same looks
to be true also of Farnell. Perhaps it might be better to start at a major
manufacturer like Murata and work from there. More than likely they'll
have a list of distributors in the UK

I did a search on Google for +ZTT +resonator and got a lot of results,
bound to be a UK supplier in there somewhere

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2001\11\11@153823 by steve

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> Ooop. Teach me to do e-mails before brekky. I'd like five other
> cock-ups taken into consideration your honour

Go get your breakfast.

> The part I got was the ZTT4.00M, which is the 3-pin with caps, not the
> regular 2-pin ZTA4.00M. I've looked through past RS catalogues and
> they don't seem to have ever done 3-pin resonators. Same looks to be
> true also of Farnell. Perhaps it might be better to start at a major
> manufacturer like Murata and work from there. More than likely they'll
> have a list of distributors in the UK

Both RS and Farnell have 3 pin resonators. RS show them as 'new'
but Farnell have had them for at least a couple of years. Farnell
have 3 lead parts from AVX and Murata, including Murata SMT.
Farnell part # for Murata 4MHz is 295-346 and AVX is 573-978.
RS part # for Murata 4MHz is 179-3725.

Steve.

======================================================
Steve Baldwin                Electronic Product Design
TLA Microsystems Ltd         Microcontroller Specialists
PO Box 15-680, New Lynn      http://www.tla.co.nz
Auckland, New Zealand        ph  +64 9 820-2221
email: spamBeGonestevebspamBeGonespamtla.co.nz      fax +64 9 820-1929
======================================================

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2001\11\11@161521 by Jinx

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> Both RS and Farnell have 3 pin resonators. RS show them as 'new'
> but Farnell have had them for at least a couple of years. Farnell
> have 3 lead parts from AVX and Murata, including Murata SMT.
> Farnell part # for Murata 4MHz is 295-346 and AVX is 573-978.
> RS part # for Murata 4MHz is 179-3725.
>
> Steve.

Murata's tech document for their resonator ranges

http://www.iijnet.or.jp/murata/products/english/catalog/p16e12.pdf

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2001\11\12@124021 by Harold M Hallikainen

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       I've generally had great luck with resonators with internal capacitors
from muRata, EXCEPT when moving to surface mount parts. I just sent a
couple boards in to muRata for resonator characterization. We'll see how
that works out.

Harold


FCC Rules Online at http://hallikainen.com/FccRules
Lighting control for theatre and television at http://www.dovesystems.com

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2001\11\12@144041 by steve

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>         I've generally had great luck with resonators with internal
>         capacitors
> from muRata, EXCEPT when moving to surface mount parts. I just sent a
> couple boards in to muRata for resonator characterization. We'll see
> how that works out.

It may or may not apply to your situation but I had a lot of boards
fail to start when I tried a local hand assembly contractor. His
definition of cleaning the boards meant going through the motions
of spraying the stuff on, etc. My definition meant that the boards
would be clean and not sticky. He thought I was being way to
fussy, but when I washed the boards in question, they sprang into
life.

The upshot is that if you use a no-clean flux, you have two choices.
Either don't clean at all or if you do, make sure that it is cleaned
very well.

Steve.

======================================================
Steve Baldwin                Electronic Product Design
TLA Microsystems Ltd         Microcontroller Specialists
PO Box 15-680, New Lynn      http://www.tla.co.nz
Auckland, New Zealand        ph  +64 9 820-2221
email: EraseMEstevebspamtla.co.nz      fax +64 9 820-1929
======================================================

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