Capacitor for snuffing interference to GPS antenna

Jim Colton jimcolt at gmail.com
Mon Jul 21 23:16:16 CEST 2008


Greetings Felix,

I see the product on that site.  The capacitance is correct, but how do you
know it is the correct voltage?
All I have seen from OpenMoko is this:
http://www.openmoko.org/wiki/Image:Gta02_gps_10pf_rework_sop.pdf

.. mentioning the capacitance but not the voltage.   Please mail me if you
have a link to OpenMoko fully describing the part needed.

Thank you,

Jim

On Mon, Jul 21, 2008 at 2:55 PM, Felix Mahnke <fspmc at web.de> wrote:

> Sorry, that link is redirecting to some stupid overview page.
>
> Go to http://farnell.com and search for ordering number: 1327626
>
> greetings, Felix
>
>
> 2008/7/21 Felix Mahnke <fspmc at web.de>:
>
> Hi Jim,
>>
>> you should get one at your local parts dealer. Buying one cercap via
>> internet is pretty expensive.
>>
>> Anyway, farnell sells stuff like this:
>> http://export.farnell.com/1327626/passives/product.us0?sku=avx-04025a100dat2a
>>
>> regards, Felix
>>
>>
>> 2008/7/21 Jim Colton <jimcolt at gmail.com>:
>>
>> Tommi,
>>>
>>> Did you get the recommended cap (0402) from OpenMoko?   Please refer me
>>> to the source if so.
>>>
>>> Thank you,
>>> Jim
>>>
>>>
>>> On Mon, Jul 21, 2008 at 9:00 AM, Tommi Kärkkäinen <
>>> tommi.karkkainen at gmail.com> wrote:
>>>
>>>> Tim Schmidt kirjoitti:
>>>> > On Sun, Jul 20, 2008 at 1:10 AM, Jim Colton <jimcolt at gmail.com>
>>>> wrote:
>>>> >>
>>>> http://www.westfloridacomponents.com/mm5/merchant.mvc?Screen=PROD&Product_Code=MON001&Category_Code=MonolithicCapacitors-Chip-SurfaceMount&Store_Code=wfc
>>>> >
>>>> > Looks like that's 10uF (micro Farad), not 10pF (pico Farad) as
>>>> > recommended by OpenMoko.
>>>>
>>>> Also, it's physically too big. That's a 1206 package, the recommended
>>>> cap is 0402.
>>>>
>>>> I'm sorry but I must say that the fact that you had to ask this suggests
>>>> that you might not have the experience required to solder the capacitor.
>>>> The 0402 package *is* very small.
>>>>
>>>>
>>>> Tommi
>>>>
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>>>>
>>>
>>>
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>>
>
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