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Type: Posts; User: andyjackcao

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  1. Closed: Re: [ESD question]do a cmos swith which connected to PAD should obey ESD rule?

    may not obey the ESD rule. Yet the ESD structre is supposed to be rail-based. for example, the 2 diodes are used in analogy pad. what's impoart, the ESD clamp used between power and gnd is supposed...
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    Closed: [HELP] ESD designation puzzles me

    Dear Sir/Lady
    I'm from China,I am puzzled ESD designation;I have been in ESD circuit/layout design for 4 years, however my designation is based on the FAB's guideline and my experence. Thus...
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    Closed: help:I need DO-218AB package

    hi
    I am looking for a package house;
    I need package is DO-218AB
    thx very much
    email:andyjackcao@sina.com.cn
    best and regards
    andyjackcao
  4. Closed: rs485 tvs

    I think that the low captance TVS with strong ESD capbility is suit for the RS485 bus protection
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    Closed: Re: [help]-I am looking for MIL-HDBK-978B

    thank you very much Karl
    I will try other ways
    Regards
    andyjackcao
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    Closed: Re: [help]-I am looking for MIL-HDBK-978B

    I really appreciated for your so kind help

    thank you very much
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    Closed: Re: [help]-I am looking for MIL-HDBK-978B

    THX Kral very much for your kind reply

    when I browse the web,I got a little problem ;

    I found my computer couldn't connect to the station so that I couldn't download

    the stardard or...
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    Closed: mil-hdbk-978b

    hi,
    guys,
    I am going to join in a project of TVS,

    and I need the TVS test stard,MIL-HDBK-978B

    if you have got it , I really appreciated for your shareing

    TKS a lot
  9. Closed: Re: why 200 ohm?

    I would like to add something;

    except what's said above, I think that the protection for CDM is need to be

    considerated;if the resistor is too huge, then the second protectin for CDM will be ...
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    Closed: electrostatic discharge by kenneth kaiser.pdf

    may be you could search on the bookstore of Amazon,then there are many book about esd
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    Closed: spectre snapback devices

    hello,in some book it told me that if the esd device is
    working on NB_MODEL,then we could simulate it with
    simple MODEL,if the device is working on the snapback ,then we have to add anther...
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