UmTRXv2 final project

Jean-Samuel Najnudel - BJT PARTNERS SARL jsn at bjtpartners.com
Wed Jul 4 16:00:56 UTC 2012


Hi Andrey,

Thank you very much for your help.

I will forward this to the fab.
Yes, you are all right, the FBMH2012HM121-T price is much better than the
MLB-201209-0120PU. However, availability on Farnell France is not as good
as the MLB-201209-0120PU. Price difference is quite big but we only use 5
beads per boards. Difference makes only about 1 euro per board. I will let
the fab decide between these 2 references.

Best regards.

Jean-Samuel.
:-)


On Wed, Jul 4, 2012 at 4:30 PM, Andrey Sviyazov <andreysviyaz at gmail.com>wrote:

> 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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