UmTRXv2 final project

Jean-Samuel Najnudel - BJT PARTNERS SARL jsn at bjtpartners.com
Wed Jul 4 13:46:47 UTC 2012


Hi Andrey,

Thank you very much for your reply.
Now, I better understand.

You are all right. I do not have anything as high current as
MLB-201209-0120PU at a lower price.

However, I have a 0603 600 ohm 1A bead, as MLB-160808-0600PL, at a much
lower price.
http://ru.farnell.com/tdk/mpz1608s601a/ferrite-bead-0603-600-ohm/dp/1669747RL
What do you think about this component (TDK MPZ1608S601A)?

Best regards.

Jean-Samuel.
:-)


On Wed, Jul 4, 2012 at 3:22 PM, Andrey Sviyazov <andreysviyaz at gmail.com>wrote:

> Hi Jean-Samuel.
>
> If Farnell better for you, then please order exactly MLB-201209-0120PU<http://ru.farnell.com/mec-marcom/mlb-201209-0120pu/ferrite-bead-0805-case-120ohm-5a/dp/1308778RL>
> and  MLB-160808-0600PL<http://ru.farnell.com/mec-marcom/mlb-160808-0600pl/ferrite-bead-0603-case-600ohm-1a/dp/1308770RL>
> .
> They are HI_CURRENT beads and it is really required.
>
> Please find attached here new SCH and BOM files with new part numbers and
> links.
>
> Best regards,
> Andrey Sviyazov.
>
>
>
> 2012/7/4 Jean-Samuel Najnudel - BJT PARTNERS SARL <jsn at bjtpartners.com>
>
>> Hi Andrey,
>>
>> Thank you very much for your reply.
>>
>> Could you please confirm the components bellow are fine ?
>> http://fr.farnell.com/murata/blm18tg601tn1d/ferrite-600ohm/dp/1115050RL
>>
>> http://fr.farnell.com/tdk/mmz2012121b/perle-de-ferrite-0805-120-ohm/dp/1669728RL
>>
>> Please let me know if this is fine.
>> If not, which would you suggest ?
>> http://ru.farnell.com/ferrite-beads
>>
>>
>> Thanks a lot for your help.
>>
>> Best regards.
>>
>> Jean-Samuel.
>> :-)
>>
>>
>> On Wed, Jul 4, 2012 at 2:02 PM, Andrey Sviyazov <andreysviyaz at gmail.com>wrote:
>>
>>> Hi Jean-Samuel.
>>>
>>> For the TI160808U601 and TI201209U121 you can use any high current
>>> ferrite chip bead with 600 Ohm and 120 Ohm impedance respectively.
>>> For example you could order similar partnumbers from the ELFA<https://www.elfa.se/elfa3%7Eeu_en/elfa/init.do?init=1&shop=ELFA_EU-EN>catalogue in the
>>> 0603<https://www.elfa.se/elfa3%7Eeu_en/elfa/init.do?item=65-500-37&toc=20387>and
>>> 0805<https://www.elfa.se/elfa3%7Eeu_en/elfa/init.do?item=65-500-43&toc=0> SMD
>>> cases respectively, datasheet here pdf<https://www1.elfa.se/data1/wwwroot/assets/datasheets/jqMLB-HighCurrent_e.pdf>
>>> .
>>>
>>> Best regards,
>>> Andrey Sviyazov.
>>>
>>>
>>>
>>> 2012/7/4 Jean-Samuel Najnudel - BJT PARTNERS SARL <jsn at bjtpartners.com>
>>>
>>>> Hi Andrey,
>>>>
>>>> Thank you very much for your reply.
>>>>
>>>> I try to find where to buy the TI160808U601 and TI201209-121 chokes. I
>>>> do not know where I should find these. Would you know where I should order
>>>> these components ?
>>>>
>>>> By the way, do you confirm the ISSI SRAM is pin compatible with the
>>>> Cypress chip ?
>>>>
>>>> http://www.digikey.com/product-detail/en/IS61NLP51236-200TQLI/706-1103-ND/1557418
>>>>
>>>> Is this ISSI chip fine for our application ? Is 18 MBit enough ?
>>>> Do you confirm this ISSI chip is the best value for what we need ? Are
>>>> you sure we cannot find a lower cost chip with similar performances and/or
>>>> a better performances chip with similar cost ?
>>>> Are you sure we will not need to reroute the PCB ?
>>>>
>>>> We really need to be sure before starting the PCB production. If both
>>>> you and Alexander confirm everything is fine, I will ask the fab to start
>>>> the PCB.
>>>>
>>>> Please let me know.
>>>>
>>>> Again, thanks a lot for your help.
>>>>
>>>> Best regards.
>>>>
>>>> Jean-Samuel.
>>>> :-)
>>>>
>>>>
>>>>
>>>> On Tue, Jul 3, 2012 at 11:40 PM, Andrey Sviyazov <
>>>> andreysviyaz at gmail.com> wrote:
>>>>
>>>>> Jean-Samuel.
>>>>>
>>>>> Please inform me what actually rf chockes partnumbers are problem to
>>>>> order.
>>>>> Unfortunately MuRata produce few billion pcs and then stopped for a
>>>>> few years.
>>>>> So, possible we have to find some Chinese fab partnumbers to order.
>>>>>
>>>>> Best regards,
>>>>> Andrey Sviyazov.
>>>>> (Sent from my mobile client)
>>>>> 04.07.2012 1:22 пользователь "Andrey Sviyazov" <andreysviyaz at gmail.com>
>>>>> написал:
>>>>>
>>>>>  Hi Jean-Samuel.
>>>>>> Unfortunately I have no internet connection now.
>>>>>> Tomorrow I'll check flash and others.
>>>>>>
>>>>>> Best regards,
>>>>>> Andrey Sviyazov.
>>>>>> (Sent from my mobile client)
>>>>>>
>>>>>> 04.07.2012 1:10 пользователь "Alexander Chemeris" <
>>>>>> alexander.chemeris at gmail.com> написал:
>>>>>> >
>>>>>> > On Mon, Jul 2, 2012 at 10:16 PM, Jean-Samuel Najnudel - BJT PARTNERS
>>>>>> > SARL <jsn at bjtpartners.com> wrote:
>>>>>> > > 1/ Would you know a distributor for the Murata chokes ? The fab
>>>>>> them to have
>>>>>> > > some issue to source these.
>>>>>> >
>>>>>> > Andrey is looking into this.
>>>>>> >
>>>>>> > > 2/ Would you suggest a distributor for the GPS chip ?
>>>>>> >
>>>>>> > Try contacting manufacturer directly:
>>>>>> > http://www.transystem.com.tw/product.php?b=g&m=pe&cid=4&sid=&id=66
>>>>>> >
>>>>>> > They have a distributor in UK, but I think it might be easier to buy
>>>>>> > from the manufacturer directly:
>>>>>> > http://www.castlemicrowave.com/castle-contact.asp
>>>>>> >
>>>>>> > This chip is popular in Russia, so it is easy to source them here,
>>>>>> > shipping them to EU might be a pain in big batches, but I think we
>>>>>> > could send few chips for this prototyping batch if manufacturer's
>>>>>> lead
>>>>>> > time is too long. Here it costs $14.50/chip for more then 16 chips:
>>>>>> > http://www.compel.ru/infosheet/TSI/EB-570/
>>>>>> >
>>>>>> > --
>>>>>> > Regards,
>>>>>> > Alexander Chemeris.
>>>>>> > CEO, Fairwaves LLC / ООО УмРадио
>>>>>> > http://fairwaves.ru
>>>>>>
>>>>>
>>>>
>>>
>>
>
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