UmTRXv2 final project

Andrey Sviyazov andreysviyaz at gmail.com
Wed Jul 4 14:30:36 UTC 2012


Hi Jean-Samuel.

Yes, you are all right and you can order TDK - MPZ1608S601A instead of
MLB-160808-0600PL.
And also possible to use 3 times cheaper FBMH2012HM121-T, 0805,
2.5A<http://ru.farnell.com/taiyo-yuden/fbmh2012hm121-t/ferrite-bead-0805-32mohm-2-5a/dp/8186421>
instead
of MLB-201209-0120PU.

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.
> 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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