On Wed, 17 Mar 2004 15:45:34 -0000, "Emoneg"
wrote:


"Paul Burridge" wrote in message
.. .
| Hi,
|
| They look worryingly inductive on visual inspection (there are metal
| foils rolled up in thar by the look of it.) And yet the CPC catalogue
| says that their properties make them ideal for use in filters. Has
| anyone any remarks (favourable or otherwise) to make about the use of
| this type of cap in filter apps?

Silly boy......

Sorry. I'll try not to ask such *stupid* questions again.
--

The BBC: Licensed at public expense to spread lies.

"Paul Burridge" wrote in message
...
On Wed, 17 Mar 2004 15:45:34 -0000, "Emoneg"
wrote:


"Paul Burridge" wrote in message
.. .
| Hi,
|
| They look worryingly inductive on visual inspection (there are metal
| foils rolled up in thar by the look of it.) And yet the CPC catalogue
| says that their properties make them ideal for use in filters. Has
| anyone any remarks (favourable or otherwise) to make about the use of
| this type of cap in filter apps?

Silly boy......

Sorry. I'll try not to ask such *stupid* questions again.

no stupid questions, unless you ignored the answers last time.....

remember, things you know are easy. Its the things you dont know that are
hard.

"Paul Burridge" wrote in message
...
On Wed, 17 Mar 2004 15:45:34 -0000, "Emoneg"
wrote:


"Paul Burridge" wrote in message
.. .
| Hi,
|
| They look worryingly inductive on visual inspection (there are metal
| foils rolled up in thar by the look of it.) And yet the CPC catalogue
| says that their properties make them ideal for use in filters. Has
| anyone any remarks (favourable or otherwise) to make about the use of
| this type of cap in filter apps?

Silly boy......

Sorry. I'll try not to ask such *stupid* questions again.

no stupid questions, unless you ignored the answers last time.....

remember, things you know are easy. Its the things you dont know that are
hard.

On Wed, 17 Mar 2004 15:45:34 -0000, "Emoneg"
wrote:


"Paul Burridge" wrote in message
.. .
| Hi,
|
| They look worryingly inductive on visual inspection (there are metal
| foils rolled up in thar by the look of it.) And yet the CPC catalogue
| says that their properties make them ideal for use in filters. Has
| anyone any remarks (favourable or otherwise) to make about the use of
| this type of cap in filter apps?

Silly boy......

Sorry. I'll try not to ask such *stupid* questions again.
--

The BBC: Licensed at public expense to spread lies.

Yeah, they're rolled up, but the contact is made across the ends,
generally, not just at one location in the roll. (That's why you
should build that vector network analyzer...) But I'd avoid them:
they can't take the heat. C0G ceramics and polyprops are both good.
C0G ceramics are available up to 10nF or so even in SMT; polyprops
down to 1nF at least and up to many uF.

Cheers,
Tom

Paul Burridge wrote in message . ..
Hi,

They look worryingly inductive on visual inspection (there are metal
foils rolled up in thar by the look of it.) And yet the CPC catalogue
says that their properties make them ideal for use in filters. Has
anyone any remarks (favourable or otherwise) to make about the use of
this type of cap in filter apps?

p.

On 17 Mar 2004 10:12:04 -0800, the renowned (Tom Bruhns)
wrote:

Yeah, they're rolled up, but the contact is made across the ends,
generally, not just at one location in the roll. (That's why you
should build that vector network analyzer...) But I'd avoid them:
they can't take the heat. C0G ceramics and polyprops are both good.
C0G ceramics are available up to 10nF or so even in SMT; polyprops
down to 1nF at least and up to many uF.

Would you believe 100nF/25V C0G in 1206? Not insanely expensive
either.

http://www.murata.com/catalog/c02/es0011.pdf1206? (page 5)

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" wrote in message
...
|
| Would you believe 100nF/25V C0G in 1206? Not insanely expensive
| either.
|
| http://www.murata.com/catalog/c02/es0011.pdf1206? (page 5)
|
| 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

Gosh! Zero tempco decoupling for the digital folks.

DNA

On Wed, 17 Mar 2004 23:01:13 -0000, the renowned "Emoneg"
wrote:


Gosh! Zero tempco decoupling for the digital folks.
DNA

The Z5U parts pretty much magically disappear if you get them cold..
but X7R is good enuf.

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 Wed, 17 Mar 2004 23:01:13 -0000, the renowned "Emoneg"
wrote:


Gosh! Zero tempco decoupling for the digital folks.
DNA

The Z5U parts pretty much magically disappear if you get them cold..
but X7R is good enuf.

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 Wed, 17 Mar 2004 18:21:12 GMT, Spehro Pefhany
wrote:

On 17 Mar 2004 10:12:04 -0800, the renowned (Tom Bruhns)
wrote:

Yeah, they're rolled up, but the contact is made across the ends,
generally, not just at one location in the roll. (That's why you
should build that vector network analyzer...) But I'd avoid them:
they can't take the heat. C0G ceramics and polyprops are both good.
C0G ceramics are available up to 10nF or so even in SMT; polyprops
down to 1nF at least and up to many uF.

Would you believe 100nF/25V C0G in 1206? Not insanely expensive
either.

It's almost as if they can defy the laws of physics these days....
Next thing you know: 100A FETs in the same package. :-|
--

The BBC: Licensed at public expense to spread lies.