"Blue" 0805 device - anyone identify?

[Klaus Vestergaard Kragelu]

Hi there

On of my friend send me this picture of a device he needs to identify. The
component is the one incircled in this picture on the left, two blue ones:

www.microdesign.dk/tmp/pcb1_kvk.jpg

Does anyone recognize theese ones? - alternatively I'll have to let him send
them to me to characterize them in a LCR meter....

Thanks

Klaus

 

[Boris Mohar]

On Sun, 22 Feb 2004 12:06:54 +0100, "Klaus Vestergaard Kragelund"
<klauskvik@hotmail.com> wrote:

Hi there

On of my friend send me this picture of a device he needs to identify. The
component is the one incircled in this picture on the left, two blue ones:

www.microdesign.dk/tmp/pcb1_kvk.jpg

Does anyone recognize theese ones? - alternatively I'll have to let him send
them to me to characterize them in a LCR meter....

Thanks

Klaus

My guess that they are crystal load capacitors in the range of 10 to 33pF.
Tho ne on the right appears to be cracked. Is the crustal oscillating.?
There is another cap in the bottom right corner that appears to be cracked.




Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs http://www3.sympatico.ca/borism/

 

[Wolfgang Mahringer]

Hi Boris,

Boris Mohar wrote:

My guess that they are crystal load capacitors in the range of 10 to 33pF.
Tho ne on the right appears to be cracked. Is the crustal oscillating.?

I don't think so. These two blue ones are connected in parallel!
Since the connecting tracks are much thicker than the other signal
tracks, I think these are normal decoupling caps.

There is another cap in the bottom right corner that appears to be cracked.

This borwn one is quite sure a cap.

HTH
Wolfgang

--
From-address is Spam trap
Use: wolfgang (dot) mahringer (at) sbg (dot) at

 

[Lewin A.R.W. Edwards]

On of my friend send me this picture of a device he needs to identify. The
component is the one incircled in this picture on the left, two blue ones:

My guess would be capacitors.

 

[Rob]

The components are capacitors. The one at the bottom is probably
100nF, judging by the physical size. The two blue ones are probably
going to be a lower value.
They could be the loading caps for the crystal (~22p, but the tracking
does not seem to be connecting correctly.

"Klaus Vestergaard Kragelund" <klauskvik@hotmail.com> wrote in message news:<40388d22$0$1647$edfadb0f@dread14.news.tele.dk>...

Hi there

On of my friend send me this picture of a device he needs to identify. The
component is the one incircled in this picture on the left, two blue ones:

www.microdesign.dk/tmp/pcb1_kvk.jpg

Does anyone recognize theese ones? - alternatively I'll have to let him send
them to me to characterize them in a LCR meter....

Thanks

Klaus

 

[Luddite]

Boris Mohar <borism_-void-_@sympatico.ca> wrote:

On Sun, 22 Feb 2004 12:06:54 +0100, "Klaus Vestergaard Kragelund"
klauskvik@hotmail.com> wrote:

Hi there

On of my friend send me this picture of a device he needs to identify. The
component is the one incircled in this picture on the left, two blue ones:

www.microdesign.dk/tmp/pcb1_kvk.jpg

Does anyone recognize theese ones? - alternatively I'll have to let him send
them to me to characterize them in a LCR meter....

Thanks

Klaus


My guess that they are crystal load capacitors in the range of 10 to 33pF.
Tho ne on the right appears to be cracked. Is the crustal oscillating.?
There is another cap in the bottom right corner that appears to be cracked.

what about this one? http://pages.ripco.net/~a2k/blue-white.jpg
smt part in center image

one went missing from the same board that went from antenna output to
ground after a series cap,other diagrams on similar units show 1pf or
so in that position feeding built in or 1/4 wave antennas,but I'm confused
what the blue square on it means,if anything..

see the output in the upper left corner on this one

http://pages.ripco.net/~a2k/usbwlan.pdf

Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs http://www3.sympatico.ca/borism/